Full-Stack Developer · Toronto, ON · Open to Toronto & remote roles
I build full-stack applications with TypeScript, React, Node.js, and PostgreSQL. Currently going deep on the AI engineering stack (LangChain, LlamaIndex).
TypeScript · React · Node.js / Express · SQL · PostgreSQL · REST APIs · LangChain · LlamaIndex
- pdf-knowledge-assistant — Ask questions about your PDFs. LlamaIndex ingestion + vector index with a LangChain RetrievalQA chain, Express API backend, and React frontend.
- github-repo-explorer — Search any GitHub user's repos and save favorites to your account. React + TypeScript frontend, Express API with JWT auth.
- weatherapp — Weather app consuming a public weather API. JavaScript.
- Express.js-REST-APIs — REST API practice: routing, middleware, and CRUD with Express.js.
- LinkedIn: https://www.linkedin.com/in/khanusman77/
- Email: usmankhanx3@hotmail.com

