Senior Back-end Software Engineer with German (.NET)

We are looking for a skilled (Senior) Backend Engineer to join one of our cross-functional product teams. The role requires a high level of technical expertise, excellent communication skills, and a proactive, collaborative mindset. This position is embedded in ongoing client projects and will be closely integrated into our ways of working.

Take ownership of the development and maintenance of backend services using .NET / .NET Core and C#, ensuring high performance, scalability, and reliability. Work closely with internal client teams to design, build, and refine RESTful APIs and service components. Contribute to architectural decisions, share best practices, and help establish clean, maintainable, and testable codebases. Participate in code reviews and provide constructive feedback to maintain high engineering standards. Identify and resolve performance bottlenecks and support the integration of backend services with thirdparty systems. Document systems clearly and contribute to the creation and maintenance of technical documentation. Communicate effectively with stakeholders on both client and service sides, both in German and English.