Hamza S.

AI integration for SaaS products with real users, I build AI features that survive production, not demos that break. I built Colossyan's first published OpenAI App (ChatGPT Apps SDK + a custom MCP server) and rebuilt Hatchproof into an agentic AI platform. A recent client said it better than I could: "Every promise he makes, he delivers on usually ahead of schedule." (5.0 — full review in my work history) WHAT I'VE SHIPPED - Colossyan's first published OpenAI App: ChatGPT Apps SDK, LLM workflows, custom MCP server, live on chatgpt - An AI video generation app on the Canva Apps SDK, live in the Canva marketplace - Hatchproof: LLM tool-calling, prompt routing, memory/context, and a VAPI voice screener inside a real hiring product 5+ years of production Next.js/Node/Python systems for US startups (Colossyan, Qumulo) WHAT I DO FOR YOUR SAAS - AI integration: OpenAI, Claude, Gemini. Chatbots, embedded copilots, ChatGPT Apps, MCP servers, AI features inside your existing product - AI agents that do real work which includes tool-calling, routing, memory, RAG, voice (VAPI) - The product around the AI, multi-tenant SaaS, auth, billing, admin dashboards, API-first Next.js/Node backends HOW I WORK I help define how the AI should behave, not just take tickets. Clean boundaries between the AI layer and your product. Production-safe from day one: evals, fallbacks, logging, cost control. I'm an individual engineer, not an agency. I take ownership-level work with small senior teams. Stack: Next.js, React, TypeScript, Node.js, NestJS, Python, PostgreSQL, OpenAI, Claude, LangChain, MCP, VAPI, RAG, AWS. Building an AI feature or agent into your SaaS or need someone to own the AI inside it? Send a message with what you're building. I reply within a few hours.