Pasindu Piumal
Chrome Extension • Browser Automation • Full-Stack SaaS Engineer
Top Rated engineer specializing in Manifest V3 extensions, React/Next.js, TypeScript, OpenAI/Gemini AI integrations, multi-ATS form automation, and production SaaS architecture. 175+ projects delivered with 100% Job Success.
CV Transcript & Professional Summary
Direct text version of Pasindu Piumal's Curriculum Vitae for assistive devices and fast reading.
Professional Summary
Top Rated Chrome Extension, browser automation and full-stack SaaS engineer with 100% Upwork Job Success and 175+ delivered projects. Specializes in Manifest V3, React/Next.js, TypeScript, MERN/Node.js, AI integrations, browser automation and production SaaS. Builds end-to-end products spanning extension UI, background/service-worker logic, APIs, authentication, databases, subscriptions, dashboards, scraping and resilient automation across third-party web apps.
Core Skills
Manifest V3, Chrome Extension APIs, Content Scripts, Background Service Workers, Side Panel, chrome.scripting, chrome.storage, chrome.identity, Main/Isolated World execution, DOM Manipulation, MutationObserver, Shadow DOM, cross-browser Chrome/Edge workflows.
MERN Stack (MongoDB, Express.js, React, Node.js), React, Next.js, TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS, REST APIs, WebSockets, SaaS architecture, authentication, OAuth/JWT, subscription and licensing flows.
Playwright, Puppeteer, Browser Automation, Web Scraping, Data Extraction, form/workflow automation, real-time monitoring, API/network integration, multi-ATS automation, Google APIs, Google Apps Script, Google Sheets API.
OpenAI API (GPT-4o), Gemini API, RAG, AI model integration, MongoDB, Firebase/Firestore, Supabase, Stripe, ExtensionPay, Python, Git, GitHub, Docker, AWS, Vercel.
Professional Experience
Develop Chrome extension and full-stack web products using React, Next.js, TypeScript, Node.js, APIs, authentication, databases and SaaS workflows.
Focused on Manifest V3, browser automation, AI extensions, real-time monitoring, scraping, SaaS dashboards and third-party integrations across 175+ delivered projects.
Build custom Chrome extensions, browser automation tools, AI integrations, scraping/data workflows and SaaS-connected products for international clientele.