Usama Mangi

MERN + TypeScript Developer. I build high-performance, AI-driven applications that solve real problems.

I am a 'builder' focused on crafting clean, scalable logic and building tools that save time. I thrive on mastering modern tech, from AI integration to high-performance runtimes.

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Featured Projects

InterviewAl

AI-Powered Interview Preparation Platform

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A full-stack MERN+TypeScript application that leverages the Google Gemini 2.0 Flash API to generate and grade interview questions in real-time. Engineered for performance with React optimization and clean global state management via the Context API.

React TypeScript Node.js MongoDB Gemini API

Task Manager

High-Performance "MERB" Stack SaaS

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A secure, multi-tenant collaboration app where I intentionally replaced Node.js with Bun.js to form a 'MERB' stack, achieving faster builds and native TypeScript support. Features full JWT authentication, task assignment, and a responsive TailwindCSS UI with Anime.js animations.

React Bun.js Express MongoDB JWT TailwindCSS

Real-time Chat App

Full-Stack Real-Time Messaging Platform

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A complex, stateful application built with Socket.IO to manage persistent WebSocket connections for 1:1 and group messaging. I independently handled the entire end-to-end development, from database schema to implementing live-typing indicators and push notifications.

React TypeScript Node.js MongoDB Socket.IO

Other Noteworthy Projects

FindIt

Full-Stack E-Commerce App

This is the most critical supporting project, as it's the sole evidence of my ability to work in a team. I collaborated with 2 teammates to deliver this full-stack application.

It also proves my versatility outside MERN, as it was built with a Flutter frontend and a Node.js + MySQL backend.

Flutter Node.js MySQL Team Collaboration

Personal 3D Portfolio

3D Web Visualization

An exploration of advanced web-based graphics and 3D visualization to create an immersive portfolio experience.

Three.js React

Core Skillset

Frontend

  • React.js
  • TypeScript
  • TailwindCSS
  • Three.js
  • Anime.js
  • Flutter

Backend

  • Node.js / Express.js
  • Bun.js
  • Socket.IO

Databases

  • MongoDB
  • MySQL

AI & Cloud

  • Google Gemini API
  • Google Vertex AI
  • Google Cloud

API & Security

  • RESTful APIs
  • JWT Authentication
  • Postman

Dev Tools

  • Git / GitHub
  • Neovim

Certifications & Achievements

Frontend Developer (React)

Issued by: HackerRank

Validated: React & Frontend Foundations

Google Vertex AI

Issued by: Google (via AISeekho)

Validated: Cloud AI & Generative AI

Postman API Fundamentals Student Expert

Issued by: Postman

Validated: API Development & Testing

MERN Essential Training

Issued by: LinkedIn Learning

Validated: MERN Stack Development

Version Control Using Git and GitHub

Issued by: Meta

Validated: Git & Version Control

Introduction to Mobile Development

Issued by: Meta

Validated: Mobile Dev Concepts (Flutter)

Google Cloud

Issued by: Google (via AISeekho)

Validated: Cloud Infrastructure

Problem Solving (Basic)

Issued by: HackerRank

Validated: Data Structures & Algorithms

I'm a Builder, Not Just a Student.

"Developer, learner, builder... one commit at a time MERN + TypeScript | Crafting clean UI & logic"

I'm a final-year Computer Science student, but my real passion is building. My GitHub bio isn't just a phrase; it's my work ethic.

In the first half of 2025, I entered a "high-flow" state and concurrently developed and shipped three complex, full-stack applications: an AI interview tool, a real-time chat platform, and a high-performance task manager. This "Certify -> Apply" methodology is my engine for growth. I learn a technology, validate it, and immediately build something real with it.

I'm not afraid of the command line—my deeply customized Neovim setup proves it—and I am always seeking tools that provide a performance edge, which is why I adopted Bun.js. I am not just looking for a job; I am looking for a place to build.

Let's Build Something.

I am actively seeking full-stack, frontend, or AI-focused developer roles. Have a project in mind or want to connect? Send me a message.