Rodion S.

Full-Stack & AI Engineer | React, Node.js, AI Agents (Claude/GPT-4) |

I build production-grade SaaS platforms and AI-powered systems — from multi-tenant architecture to custom AI agents that automate real business workflows. 100% Job Success Score across 34 contracts, $700K+ earned, and 25,000+ hours delivered on Upwork. What I've shipped recently: - AI Agent Developer for a voice-enabled chatbot inside a SaaS platform (5.0 rating, repeat client) - A multi-tenant SaaS platform with hard tenant isolation, role-based access, and usage-based billing - A vacation-rental platform backend rebuild that scaled connected properties 80x in 3 months - A route-management SaaS — web dashboard + mobile apps — delivered in 3.5 months - A telehealth consultation platform delivered in 6 weeks under a hard deadline Core stack: React, Next.js, TypeScript, Node.js, PostgreSQL, AWS — plus hands-on experience building AI agents and chatbots with Claude, GPT-4, OpenAI API, and LangChain. I focus on clean architecture and shipping fast without cutting corners on scalability. Comfortable owning a feature end-to-end, leading a small team through a multi-phase build, or embedding as a senior engineer inside an existing product team. Open to project-based work and long-term collaboration.