Vitaliy N.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I add AI that actually ships to your product — OpenAI/Claude integrations, chatbots that answer from your own data, and the streaming UI around them. You get a working feature, not a demo. Proof: I built SwiftMail (swift-mail.app), a live AI product that watches the user behaviour and auto-triggers messaging, and Reflect, a dual-LLM app with a provider fallback, prompt caching and an eval harness. So I handle the hard parts — provider abstraction, cost control, latency, and making output reliable — not just calling an API. What I can do for you: • OpenAI / Anthropic (Claude) API integration into an existing app • Custom chatbots & RAG over your docs/data — vector search, source-grounded answers • AI features in real SaaS — streaming responses, multi-turn, stop/cancel • Node.js / NestJS / TypeScript backends; React / Angular / Next.js front end • Payment & subscription integration — Stripe, Apple Pay, Google Pay, Google Play Billing, plus local payment rails (Telebirr, CBE) for an Ethiopian client How I work: I scope in writing, deliver in small milestones you approve as we go, and keep you updated async — minimal calls, no surprises. Send me what you're building and the AI piece you need — I'll reply with a concrete first step and a time estimate.