Senior C# Developer - C#, React.Js, AWS

Role: Senior C# Developer ASTEK has been providing IT and Engineering solutions for some of the world’s largest industrial and services groups for more than 35 years with 10,000 passionate experts in 22 countries throughout Europe, APAC, Middle East and the Americas Role Overview We are looking for a C# Developer to support Trading and Trade Operations applications. The role requires strong hands-on experience in C# , cloud-native technologies, and frontend development using ReactJS . You should also have hands on experience in Claude Code, GitHub Copilot or other agentic coding tools in your development work. Key Responsibilities Develop, enhance, and maintain applications supporting Trading and Trade Operations . Design and develop backend application components using C# . Build and support applications deployed within AWS environments. Work with Amazon EKS and containerised applications to support scalable and reliable deployments. Develop and maintain frontend/UI components using ReactJS . Troubleshoot application issues and support technical problem resolution. Collaborate with business and technical teams to deliver application enhancements. Participate in Agile development activities , including development, testing, and releases. Follow development best practices to ensure application quality and maintainability. Requirements: Possess a degree in Computer Science/Information Technology or related fields. Minimum 8 years o f experience in development work. Claude Code, GitHub Copilot or other agentic coding tools Proficient with hands-on experience in C#, AWS, EKS, and Containerized. Possess positive learning and collaborative mindset. Strong analytical, problem-solving and troubleshooting skills. Knowledge and experience in UI and React JS.