Senior Windows Engineer (C#) Warsaw

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.