#resume #cv #резюме #mobile #reactnative #typescript #llm #ai #rag #python
Position: Senior Product Engineer/Senior React Native Developer
Experience: 10+ years
Based: Poland, Krakow
Open to: remote, office or hybrid
Languages: English - B1, Russian, Ukrainian - native

Senior Product Engineer based in Krakow (CET), working on mobile apps and the AI features behind them. For five years I led React Native development of a fintech app that grew to over 100,000 MAU. Since 2026 I have been building LLM systems in production for healthcare and lending, including one where the model never gets to guess a medical code.
Numbers and details are in the CV.