At Fena, I shipped non-custodial stablecoin wallets and USDC payment links for a merchant payments platform. I also delivered card and bank cash-out flows, with ledger holds that kept balances consistent across cancellations, failures, and settlement.
At MindK, I reduced high-traffic endpoint latency from 900 ms to 250 ms and database load by 35% through Redis caching and optimization. Earlier at EPAM, I designed architecture and SDLC processes for a Big Data portal, built its Next.js and Node.js features, and coordinated Drupal and frontend teams.

