Hi, I'm Pasindu Piumal

A Chrome Extension + SaaS monorepo I built solo and scaled to 100,000+ active users generating $1M+ in subscription revenue. Sub-250ms WebSocket snipe engine, Humanization++ anti-ban mouse physics (< 0.01% ban rate), native Side Panel UI, and Stripe billing with hardware-locked licenses.

Live Chrome Web Store AI assistant for automotive technicians — diagnose faster with VIN decoding, AI-driven TSB search, screenshot OCR (Tesseract.js, on-device), voice input, and streaming GPT-4o responses in a side panel. Monetized at $5.99/mo via ExtensionPay + Stripe. 5.0 ★ Upwork · 6 paid milestones ($1,875+).

AI-powered job application autofill Chrome extension that auto-fills and submits applications across 100+ ATS platforms (Greenhouse, Workday, Ashby, Lever, Oracle). Uses OpenAI GPT-4o for AI resume tailoring and screening question answering. Built Ashby integration in 1 week after 20+ prior developers failed.

6 Upwork-verified Amazon automation Chrome extensions: sub-second slot detection, OTP capture via IMAP, multi-profile broadcast triggering, AWS WAF & Shadow DOM CAPTCHA bypass, real-time stat dashboards, and portal session auto-recovery. Each tackled a different layer of the same problem — making browser automation resilient under adversarial conditions.

Built and contributed to SuperDev Pro, a full-stack SaaS product and Chrome extension platform for developers and designers. Worked across extension development, frontend product features, SaaS workflows, commercial feature packaging, and product functionality including CSS editing, font detection, screenshots, image extraction, measurements, and export tools. The platform serves 6,000+ professionals and operates as a monetized software product with licensing, paid plans, and ongoing updates.

Built a full-stack SaaS platform with a Chrome extension frontend and backend services for authentication, data storage, automation, and analytics. Developed core product features including user dashboards, API integration, and payment-ready architecture. The system was designed to support scalable workflows, secure data handling, and a smooth user experience across web and browser extension interfaces.

Full-featured no-code web scraping Chrome extension and SaaS platform serving 1,000+ active users with 4.8★ rating on the Chrome Web Store. Visual point-and-click selector, automatic repeating list detection, bulk URL crawler, and 1-click export to Excel/CSV/JSON. Monetized with $99 Lifetime Access.