Nikita Satsiuk

I built Bloomly, a live flower-subscription marketplace with real card payments, as its sole founder and developer. I own its architecture, PostgreSQL database, backend, web application, and mobile app end to end.

I designed Bloomly’s 65-table PostgreSQL schema and built its payment core as a PL/pgSQL state machine with row locking, idempotency, computed reconciliation, and webhook verification. I integrated Alfa-Bank acquiring and ERIP for order registration, refunds, merchant payouts, and payment-status reconciliation.

I built 84 Next.js pages, 184 Server Actions, three isolated dashboards, and a 47-screen Expo mobile app. I also created a pre-hydration client-error collector that redacts personal data and helped identify a mobile rendering mismatch in production.

Alongside product work, I deliver business websites and applications directly to clients, including a bilingual Next.js site for Novadar LLC. I work AI-assisted while independently setting architecture and validating significant results through separate scripts and methods.