Andrii I.

Stripe Payments & AI App Developer | Next.js + Supabase +OpenAI/Claude

Most AI apps demo beautifully — then break the moment real users and real payments hit them. Subscriptions that double-charge, webhooks that silently fail, billing that collapses on the first edge case. I build the part that has to actually work. I'm a full-stack developer focused on Stripe payments and production-grade AI apps on Next.js + Supabase. Bring me an idea or a half-finished product, and I ship the version that holds up when money and users are real. What I handle end to end: — Stripe: subscriptions, metered/usage billing, Connect, Price IDs, webhooks, affiliate & usage tracking — AI features: OpenAI/Claude integrations, RAG, AI workflows wired into a real product — Full stack: Next.js, TypeScript, Supabase (Postgres, RLS, Auth), Vercel — Auth, multi-tenancy, and the unglamorous production glue that keeps it all from breaking Selected results: — PropRadar — AI property-comparison platform (Next.js + Supabase). 5★, "technically very strong." — Stripe Checkout with Price ID + affiliate tracking, plus a full subscription billing dashboard. — AI website generators for B2B. 5★, "exceptional, high-performance." How I work: fixed-price with clear milestones. Instead of jumping on a call, I'll send you a deployed demo so you can judge the quality up front. Glad to start with a small paid task.