Hire the Best Chrome Extension Developers in Lahore, PK

I’m Umer, a Chrome Extension Developer with 6+ years of experience building, improving, and scaling Chrome extensions and browser-based SaaS products used by thousands of real users every day. I work across the complete Chrome extension lifecycle, including Manifest V3, content scripts, background service workers, Chrome APIs, browser automation, message passing, storage, permissions, API integrations, React and TypeScript interfaces, performance optimization, and Chrome Web Store publishing. I can help you with: • Custom Chrome extension development • Manifest V2 to Manifest V3 migration • Browser automation and data extraction • Content scripts and background service workers • Chrome API and third-party API integrations • OAuth, authentication, subscriptions, and payments • Extension performance, debugging, and maintenance • Chrome Web Store submission and rejection fixes • React dashboards and SaaS platforms connected to extensions Some of my previous work includes: WAWCD, WA Chrome CRM Extension wawcd .com A Chrome extension with 70,000+ downloads, 10,000+ reviews, and more than 20,000 active users. I built and improved its extension interface, browser automation workflows, dashboard integrations, and frontend performance to support heavy daily usage. Prospeo, Lead Generation Extension prospeo .io A browser extension used by 40,000+ professionals for email discovery and data enrichment. I worked on its React and TypeScript frontend, API-driven workflows, in-browser interactions, and performance during continuous use. MakeTheDot, Browser-Based Collaboration Platform www. makethedot. com A collaborative platform connecting design, development, and merchandising workflows. I worked on its responsive frontend, real-time collaboration features, browser-based workflows, and Chrome extension functionality. My primary stack includes JavaScript, TypeScript, React, Next.js, Node.js, Chrome Extensions API, PostgreSQL, Supabase, and WebSockets. I can handle both the extension itself and the SaaS dashboard, authentication, APIs, and backend systems supporting it. I’m usually brought in when a Chrome extension needs to be built from scratch, migrated to Manifest V3, connected to an existing SaaS product, approved for the Chrome Web Store, or fixed because it has become slow, unstable, or difficult to maintain. Share your extension requirements, existing codebase, or Chrome Web Store link, and I’ll review the best way to build or improve it.

⭐️ Sr. Full-stack Developer with Proven Expertise 🕒 6+ years of professional experience ✅ Delivered high-performance web and mobile applications ✅ Skilled in modern front-end and back-end technologies As an experienced Full-stack developer, I specialize in AI workflows and crafting responsive, high-quality web and mobile applications using React.js, React Native, and Next.js. My backend expertise in Node.js, Nest.js, and Express.js allows me to build scalable, robust, and efficient systems tailored to client needs. With a strong foundation in JavaScript and TypeScript, I create elegant solutions while maintaining performance and code quality. My technical toolkit includes cutting-edge UI libraries like MUI, Tailwind CSS, and Chakra UI, alongside payment gateway integrations like Plaid and Stripe. I excel in RESTful APIs, GraphQL, and microservices architecture, ensuring seamless functionality across projects. From designing scalable platforms for managing sensitive data to enhancing user experiences for dynamic applications, I’ve transformed complex challenges into success stories. My projects include creating tools for data privacy and transparency in the healthcare sector, developing platforms for first-time homebuyers, and delivering features that streamline processes while ensuring compliance and security. Technical Skills ● Languages: JavaScript, TypeScript ● Frameworks: React.js, Next.js, React Native, Node.js, Nest.js, Express.js ● UI Libraries: MUI, Tailwind CSS, Chakra UI, Bootstrap, Styled Components ● Web Architecture: RESTful APIs, GraphQL, microservices ● Payment gateways: Plaid, Stripe ● Other Skills: PostgreSQL, TypeORM, Docker, Web Load Balancing, Pusher for Push Notifications, Redux, React Query Let’s connect to discuss how I can bring your vision to life with scalable, reliable, and innovative solutions. Whether you need a polished e-commerce platform, seamless user experience, or data-driven insights, I’m here to help!

🥇 Top Rated Full-Stack Developer & Solution Architect 🏆 10+ Years of Experience in Scalable Web & SaaS Development 🤖 AI Integration Specialist | Cloud & Enterprise Application Expert 🏅 2200+ Web Projects Delivered 🏅 Full Stack Web Applications | React, Next.js & Node.js Expert 🏅 .NET & MongoDB Developer | Scalable, Secure, Enterprise Solutions 🏅 High-Quality UI/UX, Clean Code, Reliable Delivery I’m a Senior Full-Stack Developer with 10+ years of experience building scalable, secure, and high-performance web applications for startups, businesses, and enterprises. I specialize in .NET, MERN Stack, cloud-native development, and AI-powered applications. From SaaS platforms and enterprise systems to REST APIs and intelligent automation tools, I deliver end-to-end solutions designed for long-term growth and performance. 💻 Core Expertise ✔ ASP.NET Core / .NET 8 / C# ✔ React.js, Node.js, Next.js & TypeScript ✔ REST APIs & Microservices Architecture ✔ SQL Server, PostgreSQL & MongoDB ✔ JWT, OAuth & Secure Authentication ✔ OpenAI / ChatGPT API Integration ✔ AI Chatbots & Automation Solutions ✔ Azure, AWS, Docker & CI/CD Pipelines ✔ Multi-tenant SaaS & Enterprise Applications ✔ Responsive UI/UX & Scalable Frontend Architecture 🚀 Services I Offer ✔ Custom SaaS Application Development ✔ AI-Powered Web Applications ✔ MERN & .NET Full-Stack Development ✔ Secure & Scalable API Development ✔ Cloud Migration & Optimization ✔ Legacy System Modernization ✔ Ongoing Maintenance & Feature Enhancements 🌟 Why Work With Me ✅ Clean, maintainable, and future-proof code ✅ Business-focused development approach ✅ Strong communication & reliable collaboration ✅ Scalable architecture built for long-term success ✅ High-quality delivery with on-time execution I don’t just build applications I create powerful digital solutions that help businesses scale, automate processes, and grow faster using modern technologies and AI innovation. 📩 Let’s discuss your project and turn your idea into a secure, scalable, and high-performing solution. ============================================================================ You can find me with the Given KEYWORDS Senior .NET Developer, ASP.NET Core Developer, C# Developer, Full Stack Developer, MERN Stack Developer, React.js Developer, Node.js Developer, MongoDB Developer, Express.js Developer, Next.js Developer, AI Developer, OpenAI API Integration, ChatGPT Developer, GPT-4 Integration Expert, AI Chatbot Developer, SaaS Application Developer, Web Application Developer, Enterprise Software Developer, REST API Developer, Microservices Architect, Azure Developer, Microsoft Azure Expert, Cloud Solutions Architect, Backend Developer, Frontend Developer, JavaScript Developer, TypeScript Developer, SQL Server Developer, PostgreSQL Developer, Blazor Developer, Entity Framework Expert, Software Architect, API Integration Specialist, Scalable Web Applications, Cloud Application Development, CI/CD Pipeline Expert, DevOps Engineer, Docker Developer, Kubernetes Engineer, Multi-Tenant SaaS Developer, CRM Development, ERP Software Development, Payment Gateway Integration, Authentication & Authorization, JWT Authentication, OAuth Integration, Responsive Web Design, Business Automation Solutions, Custom Software Development, High-Performance Application Development.

Chromium source level engineer, 15+ years, building browsers and shipping production AI systems on top of them. Engineered 30+ custom Chromium browsers from source, including fingerprint spoofing and anti-bot bypass work Built AI agents, RAG platforms, and LLM integrations for SaaS, security, and automation products (FlowX, Mira, Campaign AI, AI MDR) Also ship Chrome, Safari, and Firefox extensions when a project needs one Rescued 3+ projects abandoned by other teams after $45,000+ in failed spend, delivered in 1 to 3 weeks which is up-to 100X faster. Recognized as: The Best Chromium Browser Specialist, Upwork The Best Chrome Extension Developer, Upwork The Highest Ranked Extension Developer, Fiverr The Best Software Cracking & Reverse Engineering Expert The Best Chrome Extension Developer, Fiverr Top Rated Plus, Upwork 80% Re-Hire Rate, Upwork BizCom Fiesta Software Exhibition Award Proof I Deliver 100X faster: Browser abandoned after $15,000 and 3 months. Delivered in 3 weeks Browser abandoned after $30,000 and 6 months. Rebuilt from zero in 1 week Mobile app stuck for 2 months. Fixed in 4 days What I build: Chromium and CEF level browser engineering for enterprise, kiosk, and privacy use cases AI agents and multi-agent systems, RAG pipelines, custom LLM SaaS platforms AI integration into existing products: security tools, browsers, dashboards Anti-detect and anti-fingerprint browsers: canvas, WebGL, WebRTC, audio context masking Browser extensions across Chrome Web Store, Safari App Extensions, and Firefox Add-ons Why Me? Most AI developers wrap an API. I build the agent, the RAG layer, security, and integrate it into your actual product, including browser level if needed. They quote days but deliver in months or never deliver. I work inside Chromium and CEF source, not just extension APIs Full source code, logins, and documentation handed over, no lock-in All Expertise: 🌐 Chromium & Brave based Browser Development, Chrome, Firefox, Safari Extensions 💻 Desktop Development 📱 Mobile Development 🚨 Security Systems Development, Patches, Bypasses 🧠 AI Agents, RAG and LLM Development & Training 🌐 Web Development ⚙️ OS & System Software Development I deliver up to 100x faster than teams that quote weeks and then take years. Let's get started.

I build AI agents, automation pipelines, and full-stack SaaS products that go live fast and scale without breaking. My work sits at the intersection of backend engineering and intelligent automation. Node.js on the server, OpenAI and Claude on the logic layer, and clean architecture that does not need a rewrite six months later. You get the output of a senior full-stack team with the accountability of one developer who owns the entire system from day one. 𝐖𝐇𝐎 𝐈 𝐇𝐄𝐋𝐏 Startups that need an AI-powered product launched quickly without burning budget on a full team. Businesses ready to automate repetitive workflows, reduce operational costs, and run 24/7 with intelligent systems. SaaS companies outgrowing their MVP. I build scalable multi-tenant architecture with Stripe subscription billing built correctly from day one. Founders who want one accountable developer owning the full system, from API integration to frontend, with full ownership at every stage. 𝐖𝐇𝐀𝐓 𝐈 𝐁𝐔𝐈𝐋𝐃 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭𝐬 𝐚𝐧𝐝 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 Custom autonomous agents and multi-step workflows using OpenAI GPT-4o, Claude, Gemini, and LangChain. I design agent pipelines that make decisions, take action, and handle complex business logic without human input. RAG pipelines, vector search, and document intelligence using Pinecone and ChromaDB. 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐒𝐚𝐚𝐒 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 End-to-end applications with React.js, Next.js, Angular, and Vue.js on the frontend. TypeScript across the full stack. Backend with Node.js, NestJS, and Express. REST, GraphQL, and WebSocket APIs. Multi-tenant SaaS with Stripe billing, role-based access, team management, and usage-based feature gating. 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐚𝐧𝐝 𝐁𝐫𝐨𝐰𝐬𝐞𝐫 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 End-to-end automation that eliminates manual work. Playwright and Puppeteer for browser automation and scraping pipelines. Webhook-driven workflows, n8n, ETL pipelines, Redis queues, and scheduled background jobs that run without supervision. 𝐀𝐏𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 𝐚𝐧𝐝 𝐓𝐡𝐢𝐫𝐝-𝐏𝐚𝐫𝐭𝐲 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 I connect your app with Stripe, PayPal, Twilio, OAuth2, Zoom, Google APIs, and any REST or GraphQL service your product depends on. Full handling of authentication, webhooks, error management, and data sync across 30+ integrations delivered. 𝐂𝐡𝐫𝐨𝐦𝐞 𝐄𝐱𝐭𝐞𝐧𝐬𝐢𝐨𝐧𝐬 𝐚𝐧𝐝 𝐑𝐞𝐚𝐥-𝐓𝐢𝐦𝐞 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 Custom Manifest V3 Chrome extensions for browser-based productivity and SaaS integration. Real-time dashboards, live collaboration tools, and video streaming with WebSockets, WebRTC, LiveKit, and FFmpeg. 𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 AI and Agents: OpenAI GPT-4o · Claude · Gemini · LangChain · Pinecone · ChromaDB · RAG Pipelines · DeepSeek Backend: Node.js · NestJS · Express · FastAPI · Python · Flask Frontend: React.js · Next.js · Angular · Vue.js · TypeScript · Tailwind CSS · ShadCN · Kendo UI Databases: PostgreSQL · MongoDB · Redis · Elasticsearch DevOps: AWS · GCP · Docker · Kubernetes · Vercel Automation: Playwright · Puppeteer · n8n · Webhook Pipelines · Redis Queues · Celery Integrations: Stripe · PayPal · Twilio · OAuth2 · Zoom · Google APIs 𝐋𝐈𝐕𝐄 𝐏𝐑𝐎𝐃𝐔𝐂𝐓𝐒 𝐈 𝐇𝐀𝐕𝐄 𝐁𝐔𝐈𝐋𝐓 𝐒𝐜𝐫𝐨𝐥𝐥𝐢𝐧𝐠 𝐀𝐈: AI-powered TikTok automation platform with text-to-image, AI video generation, custom avatar creation, and fully automated campaign scheduling, built on Node.js and OpenAI. 𝐃𝐨𝐜𝐮𝐟𝐚𝐬𝐭 𝐀𝐈: AI process documentation platform that automatically records workflows and converts them into step-by-step guides, training videos, and interactive tutorials. 𝐂𝐨𝐧𝐭𝐞𝐧𝐭 𝐃𝐫𝐚𝐟𝐭𝐞𝐫: AI social media content platform with guided workflows, real-time generation, ad creative uploads, and Stripe subscription billing. 𝐖𝐇𝐘 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐂𝐇𝐎𝐎𝐒𝐄 𝐌𝐄 Over 8 plus years I have shipped AI-powered SaaS products, Chrome Extensions, and automation systems for startups across fintech, healthcare, and e-commerce. Every project gets full ownership from the first architecture decision to the final production deployment. Clean code, proper testing, documented handoffs. I work async-friendly, communicate clearly, and stay accountable through the full build cycle. Not just until the PR is merged. If you are building an AI product, need automation that actually runs in production, or want a Node.js expert who owns the full stack, send me a message. I respond within 1 hour and offer a free 30-minute scoping call for serious projects.

MERN/MEAN Stack Developer & Chrome Extension Specialist | 5-star rated on Upwork I'm Mubashir, a Full Stack Developer with 4+ years of experience. I specialize in: 🔹 MERN & MEAN stack web applications MongoDB, Express.js, React.js, Angular, Node.js 🔹 TypeScript for clean, scalable, error-free code 🔹 AWS cloud services deployment, hosting, and scalability 🔹 Chrome extensions with automation and AI integration 🔹 Responsive front-end UI React, Angular, Tailwind CSS, Bootstrap What you get working with me: ✅ Clean, readable code that's easy to maintain ✅ Regular updates so you're never left guessing ✅ On-time delivery I take deadlines seriously ✅ A developer who actually listens to what you need 📩 Message me and let's get started.