Игорь Чигиринцев

I’m a Lead Developer who enjoys turning complex requirements into reliable, maintainable software. In my current role, I develop and maintain the client side (frontend), test database and server side (backend) behavior, and systematically fix bugs.

I focus on software reliability and performance through regular monitoring, and I treat each defect as data—analyzing root causes to prevent repeats. I also formalize and algorithmize assigned tasks so delivery stays predictable and scalable.

Earlier, I worked as a Software Developer, doing full-stack development for my team’s own products, including the tugo.kz classifieds platform and the Sudokumobile game. On tugo.kz, I implemented backend features in Go with PostgreSQL/PostGIS geo-search, JWT authentication, and REST APIs, while building a React + TypeScript frontend with multilingual support and server-side rendering for search bots.

I’m also driven by privacy and craft: for an E2EE family location-sharing project, I applied libsodium-based cryptography (XChaCha20-Poly1305), kept sensitive data client-side, and designed on-device geofences, ETA, and notifications with a blind relay architecture. I extend that same engineering mindset to mobile by building a cross-platform Sudoku app in Flutter with real-time multiplayer (Supabase Realtime), authentication, leaderboards/achievements, offline support, and production-ready release optimization.