> Markdown version of [/jobs/ext/3234043-c-developer](https://www.wearedevelopers.com/jobs/ext/3234043-c-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # C# Developer - **Company:** SThree Plc - **Location:** London, UK - **Experience:** Experienced - **Salary:** £104,000.0 - £130,000.0 - **Contract:** Permanent contract - **Skills:** Clean Code Principles, ASP.NET, Java (Programming Language), .NET Framework, Application Programming Interfaces (APIs), Amazon Web Services, Application Integration Architecture, Automation of Tests, Microsoft Azure, Business Process Model and Notation, C Sharp (Programming Language), Cloud Computing, Code Review, Databases, Continuous Integration, Data Security, Distributed Systems, Python (Programming Language), Object-Oriented Software Development, Software Architecture, UML, ReactJS, Event Driven Architecture, Containerization, Kubernetes, Infrastructure Automation Frameworks, Information Technology, Front End Software Development, Terraform, Software Version Control, Data Pipelines, Docker, Microservices - **Published:** September 17, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=51ce351d9d541033 ## About the Role * 2-5 years' professional experience developing in C# and .NET / ASP.NET * Solid understanding of object-oriented design principles and software architecture patterns * Experience building or consuming APIs and working with microservices * Familiarity with cloud platforms (Azure, AWS or GCP) and cloud-native development * Working knowledge of SQL databases and data access patterns * Experience with version control, CI/CD concepts and automated testing * Bachelor's degree in Computer Science or equivalent professional experience * Authorization to work in the United Kingdom Nice-to-have experience includes: * Microsoft Certified: Azure Developer Associate or Microsoft Certified Solutions Developer (MCSD) * Experience with containerisation (Docker, Kubernetes) * Knowledge of distributed systems, event-driven architecture or messaging patterns * Familiarity with additional languages such as Java, Python or F5 * Experience with infrastructure-as-code tools such as Terraform * Understanding of BPMN, UML or data pipeline concepts ## Description * Developing and maintaining C# applications using .NET and ASP.NET frameworks * Building and integrating APIs and microservices within distributed system architectures * Contributing to CI/CD pipeline implementation and automation using modern tooling * Working with cloud platforms such as Azure or AWS to deploy, scale and monitor applications * Collaborating with cross-functional teams on design, code review and technical problem-solving * Writing clean, maintainable code and contributing to technical standards across the team * Supporting the integration of front-end frameworks such as React where applicable * Participating in containerisation and orchestration work using Docker and Kubernetes