Ihor C.

Next.js Developer | AI SaaS from MVP to Production | React, Node.js

Next.js developer. I build AI-powered SaaS and web platforms that make it to production. $100k+ earned on Upwork, 29 jobs, Top Rated, 93% Job Success. What I'm building right now: - A maritime marketplace on Next.js + Supabase. Lead developer on a long-term retainer, including the security hardening. - An AI-powered operations platform with React, Node.js, and LLM integrations: OpenAI, Claude, RAG pipelines, AI agents. What I do best: - Next.js development for SaaS: App Router, server components, Vercel - Node.js backends: APIs, integrations, PostgreSQL, Supabase - AI integration and AI agent development: LLM features that ship, not demos - Full stack development with TypeScript end to end Senior full stack developer by trade: Next.js, Node.js, React, and TypeScript, with PostgreSQL and Supabase underneath. How I work: I start with your business logic, not the ticket list. If the project is smaller than you think, or shouldn't be built yet, I'll say so. That honesty is why clients in the US, UK, Germany, and Austria keep working with me. Not sure about scope yet? I run a fixed-price discovery: wireframes, technical requirements, and a budget you can hold me to, before you commit to a build. Most projects start there. Bigger build? I bring senior engineers from my own 20-person team. You still work with me directly. Tell me what you're building and where it's stuck. Keywords: Next.js Developer | Node.js Developer | Senior Full Stack Developer | React | TypeScript | AI Integration | AI Agent Development | RAG | Supabase | PostgreSQL | SaaS Development | Web Application Development