Senior C Engineer – Multithreading (f/m/d)

You design and develop high-end C++ components for our medical desktop applications, with a strong focus on performance, stability, and scalability. You architect, implement, and review complex multithreading and parallelization concepts to ensure efficient, safe, and responsive execution in everyday clinical use. You analyze, refactor, and optimize our large existing codebase (QT, CMake, Conan, MSVC, and embedded CEF), identify bottlenecks, and consistently raise the performance and quality of long-lived products. You work closely with Architecture, QA, and Product Management, drive the modernization away from legacy MFC / ATL / Win32 and Delphi towards modern C++ and current .NET, and raise the overall C++ bar. You use AI agents and tools like Claude Code in your daily work to accelerate refactoring, code analysis, and legacy modernization, and you enhance our shared agents, skills, and workflows.

Several years of senior-level experience in professional C++ development, ideally in high-performance, highly parallelized desktop systems with significant ownership and end-to-end responsibility. Excellent academic background with a completed university degree in computer science, mathematics, physics, electrical engineering, or a comparable technical discipline with very good grades. Deep expertise in modern C++ (C++ 14/17/20), multithreading and concurrency, debugging and performance tuning, plus hands-on experience with Qt, CMake, Conan, MSVC, and integrating components such as CEF; confident, effective use of AI in software, ideally including Claude Code or similar agentic coding tools as well as AI pipelines and context engineering. Fluent German and fluent English, both in spoken communication and in writing, enabling you to work seamlessly in crossfunctional, international teams and with German-speaking stakeholders. A structured, analytical way of working, high-quality standards, strong problem-solving skills, innovation drive, proactive ownership and a sense of entrepreneurship with genuine enthusiasm for shaping the future of healthcare IT.

Mobile work: Work collective on the move two days a week and on site three days a week. Attractive locations: In addition to fully equipped workplaces, regular events search as summer parties and Christmas parties await you at our locations. Development: Our in-house academy and our portfolio of external cooperation partners will support you in your further development. Health: Health is a valuable asset for us. Our in-house canteen offers a selection of tasty and healthy dishes every day, and we welcome you to our fully equipped fitness center for weekly courses (online & offline). More is always possible: The kindergarten on our CGM campus in Koblenz helps our employees to organize their working day even more balancing. We therefore offer corporate benefits, the option of a job bike, a company pension scheme, and much more. Diversity is part of CGM! We look forward to receiving your application independence of disability, gender, nationality, ethnic and social background, religion, age, sexual orientation, and identity. .