Senior .NET & Systems Architect with 15+ years of commercial expertise in architecting high-availability backend systems, processing 2M+ daily transactions with 99.9% uptime across 8,000+ branch locations. Specialized in .NET 8, C#, DDD, Clean Architecture, and high-performance C++/Qt systems. Proven track record of refactoring monoliths, executing complex migrations, and integrating enterprise software with hardware platforms and national systems (KSeF). Author of 7,000+ unit and integration test suites with a strong focus on system reliability and clean code standards.
