Pasindu

Chrome extension developer

Upwork • Freelance

Feb 2025 - Present • 1 yr 3 mos

As a Lead Full-Stack & Automation Developer, I have successfully engineered and deployed over 100+ custom Chrome Extensions with a 100% Google Chrome Web Store approval rate. My expertise lies at the intersection of browser-based software, AI integration, and complex workflow automation. I specialize in converting manual, repetitive business processes into high-performance, automated systems that save clients hundreds of hours in operational costs. Key Professional Achievements & Expertise: Custom Chrome Extension Development (Manifest V3): I build production-ready extensions using the latest Google standards to ensure long-term stability. My builds include advanced features like modern Side Panels, Popups, and Content Scripts injected for real-time web interaction. AI & LLM Integrations: I have a proven track record of integrating OpenAI (GPT-4o) and Google Gemini APIs into browser environments. Notable projects include AI-powered Gmail assistants for auto-rewriting and intelligent writing assistants that leverage LLMs for data analysis. Advanced Web Scraping & Data Extraction: I design high-fidelity scraping engines capable of bypassing complex anti-bot measures like AWS WAF or Amazon Captcha. My systems sync data directly to Google Sheets or custom SaaS dashboards via REST APIs. Google Apps Script (GAS) & Workspace Automation: I develop enterprise-level automation for Google Sheets, Drive, and Forms. I build custom triggers and web apps that connect spreadsheets to Stripe and Zapier to create seamless data pipelines. Full-Stack SaaS Architecture: My background in React.js and Node.js allows me to build entire infrastructures, from sleek frontend UIs to robust Firebase/Supabase backends with user authentication. I focus on writing clean, modular, and well-documented code that follows industry best practices. My business-first mindset prioritizes user retention and API cost-efficiency. Whether it is a Manifest V3 migration or a new AI-driven SaaS product