Senior Windows Engineer (C#)

Job Title: Senior Windows Engineer About the Role: Join an international product team working on a mature, large-scale enterprise platform. You will take full ownership of feature development, performance optimization, and gradual code modernization. Key Responsibilities: Develop and optimize Windows software using C# / .NET . Debug, profile, and fix performance issues in a large codebase. Work with existing C++ components when required. Use AI coding tools daily (Cursor, Copilot, etc.). Requirements: 6+ years of commercial experience in C# / .NET. Strong background in Windows software/services development. Hands-on debugging & performance profiling skills. Ability to read/modify C++ code. B2+ English. Nice to Have: Experience with endpoint agents, Windows Services , or VDI. We Offer: Fully remote work model + powerful workstation. 20 paid vacation days + holidays. B2B accounting support in Poland.