You will get a custom Chrome extension developer for powerful browser extensions
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Project details
Looking for a professional Chrome Extension Developer to build, fix, or enhance your browser extension? I provide custom Chrome, Firefox, and Edge extension development that is secure, scalable, and performance-optimized.
What you will get:
• Custom Chrome Extension Development – tailored features, UI/UX design, and cross-browser compatibility.
• Feature Enhancement & Bug Fixing – optimize performance and maintain long-term stability.
• API Integration – connect with OpenAI/ChatGPT, Coingecko, YouTube, TikTok, and more.
• Browser Automation – automate forms, data entry, multi-tab handling, and repetitive tasks.
• Product Research Extensions – Amazon, eBay, Walmart extraction for analytics and pricing.
• Web Data Extraction & Data Parsing – export to JSON, CSV, Excel, Google Sheets, XML, TXT.
• UX/UI Enhancements – modern layouts and better user engagement.
• User Authentication & Security – OAuth, JWT, and encrypted storage.
• Custom Solutions – browser games, quizzes etc.
• Extension Publishing – support for Chrome Web Store & cross-browser submission.
Bring your Chrome extension development project to life with a reliable and expert browser extension developer.
What you will get:
• Custom Chrome Extension Development – tailored features, UI/UX design, and cross-browser compatibility.
• Feature Enhancement & Bug Fixing – optimize performance and maintain long-term stability.
• API Integration – connect with OpenAI/ChatGPT, Coingecko, YouTube, TikTok, and more.
• Browser Automation – automate forms, data entry, multi-tab handling, and repetitive tasks.
• Product Research Extensions – Amazon, eBay, Walmart extraction for analytics and pricing.
• Web Data Extraction & Data Parsing – export to JSON, CSV, Excel, Google Sheets, XML, TXT.
• UX/UI Enhancements – modern layouts and better user engagement.
• User Authentication & Security – OAuth, JWT, and encrypted storage.
• Custom Solutions – browser games, quizzes etc.
• Extension Publishing – support for Chrome Web Store & cross-browser submission.
Bring your Chrome extension development project to life with a reliable and expert browser extension developer.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$300
|
Standard
$600
|
Advanced
$1,500
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 30 days |
Number of Revisions | Unlimited | Unlimited | Unlimited |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$150 - $500
Additional Page
(+ 2 Days)
+$150
Design Customization
(+ 2 Days)
+$200
Content Upload
(+ 2 Days)
+$100Frequently asked questions
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FA
Farouq A.
Nov 4, 2025
60 minute consultation
BD
Bryan D.
Aug 23, 2025
Pay for Existing Work
AA
Ali A.
May 22, 2025
Tiktok app 2
Great work and professional throughout the project.
CH
Colby H.
Aug 23, 2024
Continuing Updates Between Version 2 and 3
CR
Carter R.
Mar 28, 2024
Build frontend UI for eLearning platform from Figma wireframe using existing GCP Cloud Functions
About Hassan
Senior AI Engineer + Full-Stack | SaaS, React.js, MVPs, Chatbots
100%
Job Success
Lahore, Pakistan - 9:30 am local time
I build production-grade SaaS web apps, mobile apps, AI chatbots, and AI agents — end to end. Senior engineer with 8+ years of experience; I've shipped products solo and led small teams when the project needed it.
Most projects are a mix — AI integration, chatbot work, and full-stack web/mobile builds, often all at once.
WHAT I BUILD
▸ AI-powered SaaS platforms Multi-tenant SaaS in Next.js + Postgres/Supabase + Stripe. Auth, billing, dashboards, admin panels. MVP in 2–6 weeks; ongoing for production. Full-stack development, end to end.
▸ Mobile apps with AI React Native + Expo cross-platform. Native iOS/Android when needed. Push, offline sync, deeplinks, subscriptions. AI features integrated cleanly (chat, voice, RAG, OCR).
▸ AI chatbots & RAG systems Custom chatbot development with Claude (Anthropic) or GPT, trained on your docs, PDFs, CRM. Vector search (Pinecone or Supabase pgvector). Citation-backed answers. Delivered on web, WhatsApp, or Slack.
▸ AI agents & automation Multi-step AI agents with LangChain / LangGraph + MCP tool servers. Document processing, lead qualification, research, internal-ops automation. Hooked into Make, n8n, Zapier — automation expert across the major no-code platforms.
▸ AI integration into existing apps Drop Claude, GPT, or Gemini into the app you already have. Connect AI to your existing CRM, dashboards, and tools. The most common project type — fast retrofit, clear ROI.
▸ Voice & calling agents Vapi, Retell, Bland, ElevenLabs, Deepgram, Twilio, LiveKit. Sub-200ms inbound/outbound, CRM dispositioning, appointment booking. Built when the project calls for it.
▸ Chrome extensions & internal tools Manifest V3 extensions, scraping/automation tools, admin dashboards.
▸ Vibe-code cleanup & deployment Lovable, Bolt, Replit, Cursor projects that need real engineering: production refactor, security, deploy pipeline, debugging, scaling.
DEFAULT STACK
Frontend: Next.js, React, React Native, TypeScript, Tailwind Backend: Node.js, Python (FastAPI), Postgres, Supabase, MongoDB, Redis AI: Claude (Sonnet/Opus), GPT-4o/5, Gemini, LangChain, LangGraph, MCP servers, Pinecone, Supabase pgvector Voice: Vapi, Retell, Bland AI, ElevenLabs, Deepgram, Twilio, LiveKit Mobile: React Native, Expo, native iOS/Android Infra: AWS, Vercel, Cloudflare, Docker, GitHub Actions Integrations: Stripe, Twilio, SendGrid, WhatsApp Business API, GoHighLevel, HubSpot, Salesforce
RECENT REAL DEPLOYMENTS (anonymized for NDA)
• Multi-agent recruitment platform — 5 specialized agents, LangGraph orchestrator, Stripe billing. • Healthcare RAG — medical report drafter, citation-backed answers, cut documentation time 90%. • Real-estate voice agent — Vapi + GHL + Twilio. 100+ inbound calls/week, 30+ tours auto-booked. • Warehouse inventory chatbot — millions of rows via RAG, 90% faster analytics for 3PL clients. • Fitness SaaS — multi-tenant React Native + Node + Stripe + AI coaching agent. • Document automation OCR — handwritten manufacturing reports → structured Excel.
HOW I WORK
Spec first. Loom walkthrough before I write code so we agree on scope.
Production-grade output: auth, error handling, deploy pipeline, README, handover.
0–4 hour response time, typically start within 24–48 hours of contract signing.
I write the code myself.
If you want a 15-min demo of working systems before you commit, send a brief and I'll send a Loom of similar past work.
Steps for completing your project
After purchasing the project, send requirements so Hassan can start the project.
Delivery time starts when Hassan receives requirements from you.
Hassan works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Gathering
Collect project details, target browsers, features, and API needs from client.
Planning & Proposal
Define scope, timeline, deliverables, and confirm the development roadmap.