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A solid design approach is a set of five principles in object-oriented programming that are designed to eliminate code rot and improve value, functionality, and maintainability.
Users can develop less coupled code by using SOLID principles.
A tightly coupled codebase is dependent on the other.
To avoid maintenance and readability problems, it is preferable not to have tightly coupled code bases.
In this section, we give examples of each SOLID principle.
SOLID Design Principles: What Are They?
With an extensive test suite, you can avoid code rot by using SOLID principles at a class-level, object-oriented design.
An acronym for solid design consists of the following five principles:
It is important for developers to adhere to these principles to avoid "code rot," and instead to build applications that provide lasting value to customers and sanity for the future developers of the project.
According to the Single Responsibility Principle (SRP), a class should never be changed because of more than one reason.
Every class, or similar structure, should only perform one function.
The whole class should revolve around this single goal.
However, this does not imply that you should limit your classes to just one method or property.
As long as their responsibilities are related, a lot of members can be involved.
It is possible that multiple members of the class may need to be changed when one reason to change occurs. Additional classes may also need to be updated.
ex:
One class contains all logic related to pay calculation, database logic, and reporting logic.
Changing one part of a class that combines multiple responsibilities might be difficult without affecting others.
By mixing responsibilities, it's also more difficult to understand the class and harder to test, resulting in a decrease in cohesion.
A simple solution is to divide the class into three classes, each with only one responsibility: accessing the database, calculating pay, and submitting reports.
In general, Open-Closed Principles require classes to be open for additions but closed for changes.
The term "open to extension" refers to the strategy of designing classes to allow new functionality to be added as new requirements arise.
If a class is "closed for modification" it means that you should not modify it once it has been created, except to fix bugs.
It appears that these two parts of the principle are in conflict.
You can add functionality without modifying existing code by structuring classes and their dependencies appropriately.
Instead of using concrete classes, you should generally refer to abstractions for dependencies like interfaces or abstract classes.
A new class that implements the interfaces can be used to add functionality.
Once your source code has been written, tested, and debugged, the OCP restricts you from changing it.
By doing so, the risk of adding new bugs to existing code is reduced, resulting in more robust software.
ex:
The use of interfaces for dependencies has the additional benefit of reducing coupling (i.e. change in class A forces changes in class B) and enhancing flexibility.
Would it be possible to add credit card support with an "if" statement like this? That would violate OCP, though.
This is the perfect solution:
Be aware that OCP only applies when the change to come is predictable, so only use it if a similar change has already occurred.
The easiest thing to do is to start simple and then find out what changes will be requested so you can better predict the future.
In other words, you need to wait for a customer to make changes and then make abstractions that will protect you against a similar change in the future.
Liskov Substitution Principle (LSP) states that you should design classes in an inheritance hierarchy in such a way that client dependencies can be replaced with subclasses without the client having any knowledge of the change.
Therefore, all subclasses must function in the same way as their base classes.
Subclasses may have different functionality, but their behavior must be in line with that of the base class.
It should also follow the implied behavior of the base class, in order to be considered a true behavioral subtype.
LSP is generally violated if a subtype of a supertype does something the supertype's client does not expect.
Think about a derived class throwing an exception that the superclass would not throw, or having a derived class with unexpected effects.
The basic rule is that derived classes should never do less than their base classes.
An example of a class deriving from a Rectangle class that violates LSP is a Square class. When the Square class is applied, the width and height are always equal.
Using a Square in a context where a Rectangle is expected may cause unexpected behavior since Squares cannot (or rather should not) be modified independently.
ex:
There is no easy fix for this problem. If the setter methods in the Square class can be modified so that they preserve the Square invariant, then this will weaken the post-conditions necessary for the Rectangle setters, which implies that dimensions can be modified independently.
As you can see above, the LSP is violated.
Undefined behavior is caused by violations of LSP, which can lead to weeks of wasted time trying to locate the problem.
Clients shouldn't be forced to rely on interface members they don't use according to Interface Segregation Principle (ISP).
ISPs guide us to creating multiple, smaller, cohesive interfaces when there are non-cohesive interfaces.
With ISP, classes communicate through tightly-focused interfaces, so you minimize dependency on unused members and thus reduce coupling.
The implementation of smaller interfaces improves flexibility and reuse ability.
By sharing interfaces among fewer classes, the number of changes required to respond to a change in an interface is reduced, resulting in higher robustness.
ex:
What if we had an ATM that has a screen where various messages can be displayed. If we wanted to add a message that appears only during withdrawals, how would that work?
If you were to add an interface method to the Messenger interface and be finished with it, you would have to recompile almost the entire system, which would violate OCP.
The issue was that adjusting withdrawal functionality caused changes to other totally unrelated functions as well, and now we are wondering how this happened.
The issue really arises from the fact that each function that uses this Messengers interface is dependent upon methods it does not need but is necessary for other functionality. Let me show you.
It would be better if you split up the Messenger interface so that each ATM function requires its own Messenger.
High-level modules should not depend on low-level modules, they should depend on abstractions, according to the Dependency Inversion Principle.
In addition, abstractions should not rely on details; details should rely on abstractions.
Essentially, we separate our class from the rest by forming a boundary with the abstractions the class depends upon.
As long as all the details behind those abstractions remain the same, the class is still safe.
As a result, this keeps coupling low and allows us to change our design more easily. DIP also allows us to test things separately.
ex:
The reader and writer interfaces in a program are abstractions, and the keyboard and printer are details based on the abstractions.
As CharCopier is oblivious to the low-level details of Readers and Writers, it works with any device that implements the Reader and Writer interface.
A solid understanding of solid principles should be considered when designing your next feature or application, one of the valuable tools in your toolbox.
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Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill sets.
We pride ourselves on being a supportive and cutting-edge workplace continuously investing in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill sets.
We pride ourselves on being a supportive and cutting-edge workplace continuously investing in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill-set.
We pride ourselves on being a supportive, cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, career paths, individual training programs, and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Storma is a UK-owned business established 5 years ago. We connect high-performing software engineer talent worldwide with some of the world’s leading and most innovative tech companies. Developers join to work as part of international engineering teams and grow their CV and skill-set.
Our client is a Canadian-based eCommerce engineering firm helping merchants build and manage their digital store infrastructure, optimize customer experience, and convert traffic to sales more efficiently.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill sets.
We pride ourselves on being a supportive and cutting-edge workplace continuously investing in staff development, engagement, and well-being. We provide security, career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill sets.
We pride ourselves on being a supportive and cutting-edge workplace continuously investing in staff development, engagement, and well-being. We provide security, career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill sets.
We pride ourselves on being a supportive and cutting-edge workplace continuously investing in staff development, engagement, and well-being. We provide security, career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill sets.
We pride ourselves on being a supportive and cutting-edge workplace continuously investing in staff development, engagement, and well-being. We provide security, career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill sets.
We pride ourselves on being a supportive and cutting-edge workplace continuously investing in staff development, engagement, and well-being. We provide security, career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill sets.
We pride ourselves on being a supportive and cutting-edge workplace continuously investing in staff development, engagement, and well-being. We provide security, career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill sets.
We pride ourselves on being a supportive and cutting-edge workplace continuously investing in staff development, engagement, and well-being. We provide security, career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill sets.
We pride ourselves on being a supportive and cutting-edge workplace continuously investing in staff development, engagement, and well-being. We provide security, career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill sets.
We pride ourselves on being a supportive and cutting-edge workplace continuously investing in staff development, engagement, and well-being. We provide security, career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill set.
We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill sets.
We pride ourselves on being a supportive and cutting-edge workplace continuously investing in staff development, engagement, and well-being. We provide security, career paths, along with individual training programs and mentoring.
Cloud Employee is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement, and well-being. We provide security, career paths, individual training programs, and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill sets.
We pride ourselves on being a supportive and cutting-edge workplace continuously investing in staff development, engagement, and well-being. We provide security, career paths, along with individual training programs and mentoring
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill-set.
We pride ourselves on being a supportive, cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, career paths, individual training programs, and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers from the Philippines join to work as part of international engineering teams and grow their CVs and skill-set.
We pride ourselves on being a supportive, cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, career paths, individual training programs, and mentoring.
We are seeking a motivated and dynamic Business Development Representative to join our team. This role is crucial for driving our business growth by identifying potential clients, conducting direct outreach, and setting appointments for our sales team. The ideal candidate will have a strong passion for sales, a successful track record of achievement, excellent communication skills, and the ability to thrive in a fast-paced environment.
We are seeking a Fullstack Developer with a strong emphasis on front-end development and user experience to join our team. This role requires a balance of front-end and back-end skills, with a preference for candidates who excel in creating visually appealing and user-friendly interfaces.
We are seeking an experienced IT Project Manager to oversee the planning, implementation, and tracking of IT projects. The ideal candidate will have strong technical skills combined with excellent leadership abilities to ensure projects are completed on time, within scope, and within budget
We are looking for a talented Software Tester to join our expanding QA team. You will be working as part of a highly skilled team, helping build high-quality interactive web and mobile applications. You will work on implementing automation tests for our products to make sure they are kept robust.
As a Full-Stack Developer, you will play a pivotal role in advancing our core product, which is market-ready and positioned for continuous improvement and innovation. You will be integral to the entire development lifecycle, enhancing existing features and deploying new functionalities. You will stay abreast of industry trends to continuously innovate and improve our product, taking ownership of projects from conception through to implementation.
As an iOS Developer, you lead technical excellence and management within our team on a leading VOD platform. You ensure iOS projects are delivered on time and within budget while providing clear solutions to complex technical issues. Your role fosters innovation and excellence through the adoption of new technologies and best practices, supporting the team to produce top-tier work.
This role will be to collaborate on the Quality Assurance of the company’s application, whilst also taking responsibility for the back-end architecture. You will assume responsibility for a wide range of activities that will include candidate support, client and integration support activities, and project-based work to improve our overall effectiveness
As a QA Engineer, the ideal candidate will have a strong background in both manual and automated testing, with a focus on mobile and web applications. This role involves working closely with developers, product owners, and UX/UI designers to ensure the highest quality of our software products.
We seek a Video Editor with a strong creative eye. You'll create high-quality YouTube videos, repurpose content, and streamline workflows using Adobe Premiere, Frame.io, CapCut, and other AI tools to maximize your video editing efforts. You will create videos on a weekly basis for our company and our CEO's personal brand. The job is completely remote, but we have offices in Makati, where you might be asked to join us occasionally for team gatherings.
This is an exciting opportunity for a video editor who has a growth mindset, who takes pride in their work and enjoys working from the comfort of their home.
As a Senior Developer specializing in Zuora Subscription Billing, you will be responsible for the design, development, and maintenance of Zuora Subscription Billing solutions to support our subscription-based business model. You will work closely with cross-functional teams to understand business requirements and implement solutions that align with the company's objectives.
Cloud Employee is a UK-owned Philippines business established 8 years ago.We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement, and well-being. We provide security, career paths, individual training programs, and mentoring.
Cloud Employee is building a ‘Future of Work’ AI driven talent tech platform in the remote software engineer staffing space.
In this strategic and hands-on creative role, you'll have the opportunity to shape the narrative of remote work and impact the tech industry at a global scale.
With team members across the US, LATAM, Europe and Asia - we’re on a mission to bridge the talent gap with our matching platform and employee experience programs.
We need your storytelling strategy skills to ‘share the journey’ and the human stories behind our business
Cloud Employee, is a UK owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being a supportive and cutting edge workplace continuously investing in staff development, engagement and well-being. We provide security, career paths, along with individual training programs and mentoring.
Cloud Employee is a fast-growing UK-managed offshore recruitment and staffing company in the Philippines. We tackle the growing global IT skills shortage by connecting tech companies based in Europe, the US, and Australia to our pool of expert software developers in the country.
We are now seeking a passionate Senior/Team Lead Full-Stack PHP Developer to join our team of skilled talents. This is an excellent opportunity to join a fun and dynamic work environment and to significantly advance your career.
Cloud Employee is a UK-owned business established 8 years ago. We connect high-performing software engineer talent worldwide with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines and Brazil as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being a supportive and cutting edge workplace continuously investing in staff development, engagement and well-being. We provide security, career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement, and well-being. We provide security, career paths, individual training programs, and mentoring.
Cloud Employee, is a UK owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being a supportive and cutting edge workplace continuously investing in staff development, engagement and well-being. We provide security, career paths, along with individual training programs and mentoring.
Cloud Employee is a UK-owned business established 8 years ago. We connect high-performing software engineer talent worldwide with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines and Brazil as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being a supportive and cutting edge workplace continuously investing in staff development, engagement and well-being. We provide security, career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being a supportive and cutting edge workplace continuously investing in staff development, engagement and well-being. We provide security, career paths, along with individual training programs and mentoring.
Our Client
A leading UK-company that specializes in providing foreign currencies solutions
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
A completely integrated innovation studio within the corporate framework, with a primary emphasis on making the future of the food industry accessible to all. Their core objective is to discover, create, and expand tailored automation remedies, utilizing a team of proficient individuals covering domains like engineering, robotics, and artificial intelligence. Our central mission revolves around constructing automation technology solutions that empower individuals to achieve greater feats.
Position Summary
In your role as a Robotics Software Engineer, your expertise in Robotic Software Engineering will be the key to your success. Collaborating with our skilled team, you'll play a pivotal role in advancing our cutting-edge product development accelerator. Your responsibilities will involve crafting, programming, and evaluating top-notch software essential for ensuring the dependable and secure operations of commercial robots.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
A completely integrated innovation studio within the corporate framework, with a primary emphasis on making the future of the food industry accessible to all. Their core objective is to discover, create, and expand tailored automation remedies, utilizing a team of proficient individuals covering domains like engineering, robotics, and artificial intelligence. Our central mission revolves around constructing automation technology solutions that empower individuals to achieve greater feats.
Position Summary
The position of Mechanical Engineer corresponds to a mid-level role. An ideal candidate for this position possesses robust practical expertise in various technical systems. The responsibilities encompass a combination of individual input within projects and actively leading teams towards achieving a remarkable standard of technical proficiency.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
A completely integrated innovation studio within the corporate framework, with a primary emphasis on making the future of the food industry accessible to all. Their core objective is to discover, create, and expand tailored automation remedies, utilizing a team of proficient individuals covering domains like engineering, robotics, and artificial intelligence. Our central mission revolves around constructing automation technology solutions that empower individuals to achieve greater feats.
Position Summary
In the role of an Industrial Design Engineer with a focus on cobotics, you will assume a crucial position in envisioning, crafting, and honing both the tangible and operational facets of our collaborative robotic solutions. Your collaboration will extend to cross-functional groups, including mechanical engineers, software developers, and UX designers, in the pursuit of devising cobotic systems centered around users. These systems will redefine effectiveness and safety within industrial settings.
Cloud Employee, is a UK owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being a supportive and cutting edge workplace continuously investing in staff development, engagement and well-being. We provide security, career paths, along with individual training programs and mentoring.
A top rated and state of the art cloud based video interviewing solutions company based in the UK catering to over 5000 prominent companies around the world such as Samsung, Uber, Boohoo, Coinbase, 7-Eleven and many more.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
A completely integrated innovation studio within the corporate framework, with a primary emphasis on making the future of the food industry accessible to all. Their core objective is to discover, create, and expand tailored automation remedies, utilizing a team of proficient individuals covering domains like engineering, robotics, and artificial intelligence. Our central mission revolves around constructing automation technology solutions that empower individuals to achieve greater feats.
Position Overview
In the role of an Electrical Engineer, your expertise and proficiency in designing electrical-mechanical systems will be a key asset, enabling you to stand out. Collaborating with our skilled team, you will play a vital role in expediting product development processes.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee is a fast-growing UK-managed offshore recruitment and staffing company in the Philippines. We tackle the growing global IT skills shortage by connecting tech companies based in Europe, the US, and Australia to our pool of expert software developers in the country.
We are now seeking a passionate Front End React Developer to join our team of skilled talents. This is an excellent opportunity to join a fun and dynamic work environment and to significantly advance your career.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee is a fast-growing UK-managed offshore recruitment and staffing company in the Philippines. We tackle the growing global IT skills shortage by connecting tech companies based in Europe, the US, and Australia to our pool of expert software developers in the country.
We are now seeking a passionate Full-Stack Developer to join our team of skilled talents. This is an excellent opportunity to join a fun and dynamic work environment and to significantly advance your career.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineering teams and grow their CV and skill-set.We pride ourselves on being a supportive and cutting-edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring
Cloud Employee is a fast-growing UK-managed offshore recruitment and staffing company in the Philippines. We tackle the growing global IT skills shortage by connecting tech companies based in Europe, the US, and Australia to our pool of expert software developers in the country.
We are now seeking passionate mid to senior-level Fullstack PHP Developer to join our team of skilled talents. This is an excellent opportunity to join a fun and dynamic work environment and to significantly advance your career.
Cloud Employee is a fast-growing UK-managed offshore recruitment and staffing company in the Philippines. We tackle the growing global IT skills shortage by connecting tech companies based in Europe, the US, and Australia to our pool of expert software developers in the country.
We are now seeking passionate Lead Full-Stack PHP Developer to join our team of skilled talents. This is an excellent opportunity to join a fun and dynamic work environment and to significantly advance your career.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee, is a UK-owned Philippines business established 8 years ago. We connect high-performing software engineer talent in the Philippines with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines as part of international engineer teams and grow their CV and skill-set.
We pride ourselves on being supportive and cutting-edge work that continuously invests in staff development, engagement and well-being. We provide security, and career paths, along with individual training programs and mentoring.
Cloud Employee is a UK-owned business established eight years ago. We connect high-performing software engineer talent worldwide with some of the world’s leading and most innovative tech companies. Developers join to work from the Philippines and Brazil as part of international engineering teams and grow their CV and skill-set.
We pride ourselves on being a supportive and cutting edge workplace that continuously invests in staff development, engagement, and well-being. We provide security, career paths, individual training programs, and mentoring.
February 16, 2024
A solid design approach is a set of five principles in object-oriented programming that are designed to eliminate code rot and improve value, functionality, and maintainability.
Users can develop less coupled code by using SOLID principles.
A tightly coupled codebase is dependent on the other.
To avoid maintenance and readability problems, it is preferable not to have tightly coupled code bases.
In this section, we give examples of each SOLID principle.
SOLID Design Principles: What Are They?
With an extensive test suite, you can avoid code rot by using SOLID principles at a class-level, object-oriented design.
An acronym for solid design consists of the following five principles:
It is important for developers to adhere to these principles to avoid "code rot," and instead to build applications that provide lasting value to customers and sanity for the future developers of the project.
According to the Single Responsibility Principle (SRP), a class should never be changed because of more than one reason.
Every class, or similar structure, should only perform one function.
The whole class should revolve around this single goal.
However, this does not imply that you should limit your classes to just one method or property.
As long as their responsibilities are related, a lot of members can be involved.
It is possible that multiple members of the class may need to be changed when one reason to change occurs. Additional classes may also need to be updated.
ex:
One class contains all logic related to pay calculation, database logic, and reporting logic.
Changing one part of a class that combines multiple responsibilities might be difficult without affecting others.
By mixing responsibilities, it's also more difficult to understand the class and harder to test, resulting in a decrease in cohesion.
A simple solution is to divide the class into three classes, each with only one responsibility: accessing the database, calculating pay, and submitting reports.
In general, Open-Closed Principles require classes to be open for additions but closed for changes.
The term "open to extension" refers to the strategy of designing classes to allow new functionality to be added as new requirements arise.
If a class is "closed for modification" it means that you should not modify it once it has been created, except to fix bugs.
It appears that these two parts of the principle are in conflict.
You can add functionality without modifying existing code by structuring classes and their dependencies appropriately.
Instead of using concrete classes, you should generally refer to abstractions for dependencies like interfaces or abstract classes.
A new class that implements the interfaces can be used to add functionality.
Once your source code has been written, tested, and debugged, the OCP restricts you from changing it.
By doing so, the risk of adding new bugs to existing code is reduced, resulting in more robust software.
ex:
The use of interfaces for dependencies has the additional benefit of reducing coupling (i.e. change in class A forces changes in class B) and enhancing flexibility.
Would it be possible to add credit card support with an "if" statement like this? That would violate OCP, though.
This is the perfect solution:
Be aware that OCP only applies when the change to come is predictable, so only use it if a similar change has already occurred.
The easiest thing to do is to start simple and then find out what changes will be requested so you can better predict the future.
In other words, you need to wait for a customer to make changes and then make abstractions that will protect you against a similar change in the future.
Liskov Substitution Principle (LSP) states that you should design classes in an inheritance hierarchy in such a way that client dependencies can be replaced with subclasses without the client having any knowledge of the change.
Therefore, all subclasses must function in the same way as their base classes.
Subclasses may have different functionality, but their behavior must be in line with that of the base class.
It should also follow the implied behavior of the base class, in order to be considered a true behavioral subtype.
LSP is generally violated if a subtype of a supertype does something the supertype's client does not expect.
Think about a derived class throwing an exception that the superclass would not throw, or having a derived class with unexpected effects.
The basic rule is that derived classes should never do less than their base classes.
An example of a class deriving from a Rectangle class that violates LSP is a Square class. When the Square class is applied, the width and height are always equal.
Using a Square in a context where a Rectangle is expected may cause unexpected behavior since Squares cannot (or rather should not) be modified independently.
ex:
There is no easy fix for this problem. If the setter methods in the Square class can be modified so that they preserve the Square invariant, then this will weaken the post-conditions necessary for the Rectangle setters, which implies that dimensions can be modified independently.
As you can see above, the LSP is violated.
Undefined behavior is caused by violations of LSP, which can lead to weeks of wasted time trying to locate the problem.
Clients shouldn't be forced to rely on interface members they don't use according to Interface Segregation Principle (ISP).
ISPs guide us to creating multiple, smaller, cohesive interfaces when there are non-cohesive interfaces.
With ISP, classes communicate through tightly-focused interfaces, so you minimize dependency on unused members and thus reduce coupling.
The implementation of smaller interfaces improves flexibility and reuse ability.
By sharing interfaces among fewer classes, the number of changes required to respond to a change in an interface is reduced, resulting in higher robustness.
ex:
What if we had an ATM that has a screen where various messages can be displayed. If we wanted to add a message that appears only during withdrawals, how would that work?
If you were to add an interface method to the Messenger interface and be finished with it, you would have to recompile almost the entire system, which would violate OCP.
The issue was that adjusting withdrawal functionality caused changes to other totally unrelated functions as well, and now we are wondering how this happened.
The issue really arises from the fact that each function that uses this Messengers interface is dependent upon methods it does not need but is necessary for other functionality. Let me show you.
It would be better if you split up the Messenger interface so that each ATM function requires its own Messenger.
High-level modules should not depend on low-level modules, they should depend on abstractions, according to the Dependency Inversion Principle.
In addition, abstractions should not rely on details; details should rely on abstractions.
Essentially, we separate our class from the rest by forming a boundary with the abstractions the class depends upon.
As long as all the details behind those abstractions remain the same, the class is still safe.
As a result, this keeps coupling low and allows us to change our design more easily. DIP also allows us to test things separately.
ex:
The reader and writer interfaces in a program are abstractions, and the keyboard and printer are details based on the abstractions.
As CharCopier is oblivious to the low-level details of Readers and Writers, it works with any device that implements the Reader and Writer interface.
A solid understanding of solid principles should be considered when designing your next feature or application, one of the valuable tools in your toolbox.
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