Kimuel A.

Fullstack Engineer | Next.js, Python & AI Agents (RAG, LLM Apps)

I build production web applications — and the AI systems that make them smarter. 2,000+ hours on Upwork with 100% Job Success, including a 19-month engagement as lead fullstack engineer for a crypto-to-fiat payments startup, shipping MVPs and production features end to end. WHAT I BUILD AI & automation — RAG assistants with cited answers, caching and guardrails (FastAPI, LangChain, ChromaDB, Redis). Autonomous agents that enrich and score leads, research prospects, and draft outreach behind a human-in-the-loop approval step. Workflow automations that remove manual work. OpenAI, DeepSeek, Vercel AI SDK, and custom pipelines. Fullstack product — Next.js, React, TypeScript, Node/Express, Tailwind. Postgres, MongoDB, Firebase. Deployed on Vercel, GCP and AWS. Stripe payments, admin dashboards, CMS-driven sites, plus performance and SEO handled by default. Web3 — Solidity contracts, wallet/Ethers/Thirdweb integration, on-chain dApps, and crypto payment rails. I've built a play-to-earn token game and production crypto-to-fiat infrastructure for a licensed VASP. HOW I WORK You get a scoped plan before I write code, something working early enough to react to, and updates you never have to chase. I reply within a few hours and flag problems before they turn into delays. RECENT BUILDS Atlas — agentic assistant with persistent memory, live tool integrations, daily planning and research. Autonomous SDR Agent — scores leads 0-100 against your ICP with reasoning, then drafts personalized email sequences gated behind an approval dashboard. Knowledge Base Chat — RAG support assistant with citations, query caching, rate limiting and guardrails. Nexabiz — config-driven web studio platform with WebGL hero and per-prospect demo sites on Neon Postgres. Good fit if you need an AI feature shipped into a real product, an internal workflow automated, or a fullstack build taken from design to production. Message me with what you're trying to build and I'll tell you honestly whether I'm the right person for it.