Senior Windows Engineer (C#) Warsaw
First seen by Alion on Oct 26, 2026.
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.