Senior Web Application Developer

Senior Full-Stack Web Application Developer

Role: Senior Web Application Developer (Full-Stack)

Specialism(s): eCommerce, ASP.NET MVC 5, C#, React, Migrations, Microsites, Cloud-Native, HTML5/CSS3/JavaScript, API, CI/CD, IoC Containers, Agile

Type: Contract, Daily Rate

Duration: 3+ Months

Location: London

Pay Rate: £450 - £525 per day (Inside IR35 – via Umbrella)

Start: ASAP/Urgent

Senior Web Application Developer (Full-Stack)

CPS Group UK are delighted to be working with a leading, globally recognized eCommerce brand to appoint a seasoned Senior Full-Stack Web Application Developer to play a key role in the migration of their eCommerce platform and microsites into ASP.NET MVC5 framework, along the roadmap towards a cloud-native architecture.

The Senior Web Application Developer will be responsible for designing, building, and maintaining scalable, secure web applications that deliver complex solutions seamlessly across multiple platforms.

High standards, attention to detail, and a forward-thinking mindset are required — helping shape coding best practices, modern coding standards, and supporting the journey toward a fully cloud-ready environment.

Role Requirements

• Develop and maintain complex web solutions using ASP.NET MVC 5, C#, and React
• Support migration activities, ensuring clean architecture, scalable design, and efficient implementation
• Produce secure, maintainable, scalable, and fault-tolerant code following SOLID principles and OO design patterns
• Contribute to front-end development using HTML5, CSS3, JavaScript, and modern React components
• Participate in architectural discussions and propose improvements
• Participate in code reviews, mentoring team members and ensuring consistency and maintainability
• Manage source control, branching, and deployments using GitLab or Azure pipelines
• Integrate and maintain third-party services and APIs
• Ensure smooth and stable release cycles across multiple websites and environments
• Deliver high-quality, secure, and scalable code aligned with architectural standards

Required Skills & Experience

• Extensive development experience with a strong track record in bespoke eCommerce and enterprise web applications projects
• Proven expertise on C#, ASP.NET MVC 5, SQL Server, Entity Framework
• HTML5, CSS3, JavaScript, jQuery, and React experience.
• Strong knowledge of Object-Oriented Programming, SOLID principles, and common design patterns.
• Experience working with RESTful API design and integration; SOAP WebServices and XML/XPath
• Skilled in using IoC containers (Autofac, Ninject) and unit testing frameworks
• Experienced with CI/CD and DevOps pipelines (GitLab, Azure DevOps, TeamCity)
• Proven experience working in Agile environments7
• Understanding of application and database performance tuning, troubleshooting, and optimization techniques.
• Familiarity with enterprise CMS platforms (e.g., SDL Tridion)

For more information or immediate consideration for this opportunity, please contact Charlie Grant at CPS Group UK on 02920 37 55 99 or email cgrant@cpsgroupuk.com