Salary: £50,000 - 90,000 per year Requirements: Minimum 8 years of web application development experience with a strong portfolio in bespoke eCommerce and enterprise web applications. Proven expertise in C#, ASP.NET MVC 5, SQL Server, Entity Framework, and React, with desirable skills in HTML5, CSS3, JavaScript, and jQuery. Strong knowledge of Object-Oriented Programming, SOLID principles, and common design patterns. Experienced in RESTful API design and integration; experience with SOAP WebServices and XML/XPath. Skilled in using IoC containers (Autofac, Ninject) and unit testing frameworks (NUnit, Moq, SpecFlow). Proficient with source control management tools (Git, GitFlow, SourceTree) and dependency management using NuGet. Experienced with CI/CD and DevOps pipelines (GitLab, Azure DevOps, TeamCity, Cake, or Octopus). Working knowledge of Agile methodologies (Scrum/Kanban) and issue tracking tools such as Jira. Proven track record of delivering features and projects to deadlines while maintaining high standards of quality and reliability. Understanding of application and database performance tuning, troubleshooting, and optimization techniques. Comfortable working in small, collaborative teams and taking initiative in managing development tools, environments, and build processes. Familiarity with enterprise CMS platforms (e.g., SDL Tridion). Proactively stays current with emerging technologies, frameworks, and development practices. Degree or equivalent qualification in Computer Science or a related technical field. Responsibilities: Develop and maintain complex web solutions using ASP.NET MVC 5, C#, and React, providing problem-solving insights to enhance product quality. Support migration to new technologies, ensuring clean architecture, scalable design, and efficient implementation. Deliver secure, maintainable, scalable, and fault-tolerant code following SOLID principles and industry best practices. Contribute to front-end development using HTML5, CSS3, JavaScript, and modern React components. Participate in architectural discussions and propose improvements to enhance system performance and maintainability. Collaborate with Digital Product, Technology, and Marketing teams to define, estimate, and deliver features within sprint timelines. Participate in code reviews, mentoring team members to maintain consistency and adherence to standards. Advise and guide mid-level and junior developers on technical approaches and design decisions. Work independently and manage source control, branching, and deployments using GitLab or Azure pipelines. Log and troubleshoot errors across development, staging, and production environments to maintain stability. Integrate and maintain third-party services and APIs to ensure seamless connectivity with external systems. Ensure smooth and stable release cycles across multiple websites and environments. Research and explore new technologies and techniques to continuously improve platform quality and team capability. Technologies: API ASP.NET Azure C# CI/CD CMS DevOps Git GitLab HTML5 Support JIRA JavaScript Kanban Marketing MVC React SOAP SQL SpecFlow Teamcity WebServices Web XML XPath jQuery Cloud AWS Network More: We are seeking a Senior Web Application Developer for a hybrid role based in West London, focused on eCommerce web applications. This three-month contract, with potential for extension, offers a daily rate of £425 (inside IR35). Our team values a strong portfolio in bespoke eCommerce and a commitment to crafting modern, scalable web applications. At PCR Digital, we prioritize diversity, equity, and inclusion in our recruitment process, fostering a supportive and varied culture for all individuals. We welcome all applicants and encourage anyone with the right qualifications to join us on our exciting journey. last updated 19 week of 2026