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JahanzaibJameel/README.md




About Me

I build frontends and mobile apps that are fast, accessible, and a genuine joy to maintain. My work sits at the intersection of performance, clean architecture, and user‑centered design — currently focused on React Native and Next.js.


What I Do

  • Build fast, scalable web applications with React, Next.js, and TypeScript
  • Create performant cross‑platform mobile experiences using React Native and Expo
  • Design reusable component libraries and frontend architectures that scale across teams
  • Optimize Core Web Vitals, bundle sizes, and perceived performance for production apps
  • Collaborate end‑to‑end — from design handoff to deployment — shipping features that matter

Selected Experience

Frontend Developer @ Apprex Systems

Jan 2024 – Present

Key Responsibilities

  • Developed responsive and reusable UI components with React and Tailwind CSS.
  • Built and maintained scalable frontend architectures for production applications.
  • Implemented authentication flows, API integrations, and state management solutions.
  • Optimized application performance, loading speed, and user experience across devices.
  • Collaborated with designers and backend developers to deliver new features and improve existing products.
  • Fixed bugs, improved code quality, and maintained clean, maintainable codebases.
  • Participated in deployment workflows using Git, GitHub, Vercel, and related modern development tools.

Tech Stack


GitHub Activity


Currently Exploring

I’m diving deep into offline‑first React Native architectures because I believe the next generation of mobile apps must feel native even on unreliable networks.

  • Advanced React Native Architecture (JSI, Turbo Modules)
  • Expo Ecosystem & EAS Build/Submit workflows
  • Offline‑First Applications (WatermelonDB, MMKV)
  • Mobile Performance Optimization (Reanimated 2, Hermes profiling)

Let's Connect


Building scalable digital experiences with performance-focused engineering.

Pinned Loading

  1. Messaging-Application Messaging-Application Public

    A modern, production-minded React Native + Expo messaging platform built with TypeScript, a clean architecture foundation, and security-aware engineering practices.

    HTML 2

  2. DevFlow DevFlow Public

    Production-ready Next.js 16 application with AI integration

    TypeScript 2

  3. nextjs-weather-app nextjs-weather-app Public

    A production-ready, enterprise-grade weather application built with Next.js, TypeScript, and modern web development best practices.

    TypeScript 2

  4. -React-Native-Video-Editor -React-Native-Video-Editor Public

    A production-grade, TikTok/CapCut-level video story editor built entirely in React Native with cutting-edge performance and professional features.

    TypeScript 8

  5. CryptoVault-Pro CryptoVault-Pro Public

    A production-grade Angular 21 application demonstrating resilient, offline-first cryptocurrency portfolio management with clean architecture and enterprise engineering practices.

    TypeScript 2

  6. Financial-Analysis-Calculator Financial-Analysis-Calculator Public

    Modern AI-powered financial analysis calculator built with Next.js 16, TypeScript, Tailwind CSS and OpenAI.

    TypeScript 2