BoulderPad
MOBILE APPSReact Native mobile apps (iOS and Android) for tracking bouldering progression. Built with Expo and tested with Maestro.
I build and break things. Creating test frameworks, tooling and processes that help teams ship with confidence. 10 years across fintech, travel, and startups. Serial founding QA.
React Native mobile apps (iOS and Android) for tracking bouldering progression. Built with Expo and tested with Maestro.
Adds human error realism to test data. Because perfect test data creates imperfect software.
An interactive BMO companion component for React — the small computer friend from Adventure Time. Boots up, blinks, falls asleep, and reacts to your clicks.
Booking.com (2023-Present)
Test Engineer - Travel.
Mobile test strategy (iOS & Android) · AI testing & evals · Automation · CI/CD
Red Badger (2022)
Senior QA Lead - Consultancy, Banking.
Mobile web · eKYC onboarding · Compliance & biometric testing
Hopin (2020-2022)
Founding QA / SDET - Online events, hypergrowth startup (3.5M users, $7.8B valuation).
Web & mobile · Quality strategy & hiring · Full-stack test automation · Internal tooling · CI/CD
JUUL Labs (2019-2020)
Senior QA Engineer - Global e-commerce across EMEA, regulatory compliance.
Web & mobile web · Cross-browser & visual testing · Regulatory compliance · Automation
Culture Trip (2018-2019)
QA Lead - Travel. First technical QA hire, grew team 0→10, served 18M monthly users.
Web & mobile · Strategy, hiring & coaching · Automation · Contract testing · CI/CD
Pie Mapping (2016-2018)
QA Lead - Transport & Logistics. First QA hire.
Web & native mobile · Automation · Compliance · Remote team leadership · Client UAT · CI/CD

I'm Han, a test engineer and tinkerer. I thrive when things don't work as expected, and love channelling that energy into building things that consistently do. I follow the principles of the Tao (Wu Wei, effortless action) in my work and life: following my natural curiosity, learning by doing, and letting opportunities emerge naturally.
Outside of work, I'm always tinkering away: building my passion project Boulderpad, exploring gaps in test infrastructure via Oopsify (my npm package for realistic test data), or experimenting on an ever-expanding multi-node homelab setup.
When I'm not at my computer, you'll find me bouldering, wild camping in the mountains, exploring creative projects, or playing board games.
Want to work together? Get in touch.