Badar A.
Browser Extension & Full-Stack Developer | Manifest-V3 React Supabase
I build browser extensions people actually keep installed, plus the full web apps behind them. Top Rated Plus, 100% Job Success, $100K+ earned across 29 projects — and unlike most, I can show real user traction, not just screenshots. What I build: - Chrome, Firefox & Edge extensions on Manifest V3 — service workers, content scripts, cross-browser support, Chrome Web Store approvals & compliance - MV3 migrations and rescues — broken service workers, rejected submissions, deprecated APIs - Full web apps end to end — React + Vite, Node, Supabase, deployed on Vercel — so the extension and its dashboard, auth, and billing come from one person Recent work: - Supademo — extension live with 40,000+ users - Spot N Paste — 1,000+ paying customers - Multi-platform desktop + browser app with Whisper transcription and FFmpeg editing Why clients keep me: - One accountable developer — no agency handoffs, no "let me check with the team" - Replies within a few hours, with regular progress updates instead of silence - A straight "no" when something isn't feasible, before you spend budget on it We're a good fit if: you need an extension built, fixed, or migrated to Manifest V3 — or a small-to-mid web app shipped fast by someone who won't disappear. Send me what you're building and I'll tell you honestly whether I'm the right person for it.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $4.1k
Billed in all: $166,542$167k
$2.1k in the last 6 months
Across 34 contracts
Earnings, last 30 days
Skill rankings: Top 7% in web3.js
Ranked by MRR among everyone on Upwork with the skill.
- #9Firefox Plugin Development39 freelancers · 🇵🇰 #3Top 23%🇵🇰#3 of 11
- #25web3.js342 freelancers · 🇵🇰 #4Top 7%🇵🇰#4 of 67
- #36Angular 6387 freelancers · 🇵🇰 #7Top 9%🇵🇰#7 of 40
- #104Google Chrome Extension660 freelancers · 🇵🇰 #21Top 16%🇵🇰#21 of 109
- #363ASP.NET Core2,272 freelancers · 🇵🇰 #66Top 16%🇵🇰#66 of 495
- #1,215API Development6,848 freelancers · 🇵🇰 #269Top 18%🇵🇰#269 of 1,551
- #1,242C#8,348 freelancers · 🇵🇰 #170Top 15%🇵🇰#170 of 1,226
- #4,211Node.js25,795 freelancers · 🇵🇰 #923Top 16%🇵🇰#923 of 5,553