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Usmankh4/README.md

Hi, I'm Usman Khan 👋

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).

Stack

TypeScript · React · Node.js / Express · SQL · PostgreSQL · REST APIs · LangChain · LlamaIndex

Featured projects

  • 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.

Reach me

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  1. pdf-knowledge-assistant pdf-knowledge-assistant Public

    AI chatbot that answers questions from your PDFs — LlamaIndex ingestion + vector index, LangChain RetrievalQA, Express API, React frontend.

    TypeScript

  2. github-repo-explorer github-repo-explorer Public

    Search any GitHub user's repos and save favorites to your account. React + TypeScript frontend, Express API with JWT auth.

    TypeScript

  3. weatherapp weatherapp Public

    Weather app built with JavaScript, consuming a public weather API.

    JavaScript

  4. Express.js-REST-APIs Express.js-REST-APIs Public

    REST API practice with Express.js — routing, middleware, and CRUD.

    JavaScript