At Shadow Payment Provider, I brought an open-source payment core into production in four months, reaching 99.9% uptime. I also integrated six payment providers and reduced onboarding time from two weeks to two days.
At Mindbox, I led a GitHub-to-GitLab migration across 12 teams, 250 developers, and 900 repositories, with zero development downtime. The migration reduced platform costs by 80%.
At 1ex Trading Board, I owned the technical direction for trading infrastructure. I optimized exchange connectors to reach 85,000 market messages per second and reduced memory use by 50%.
In my project work, I architected a crypto trading platform processing 200,000 market messages per second and built a backtesting engine that processes a year of minute-level data in two minutes. I also created and maintain 123 open-source C# libraries.
