Jonathan Napitupulu

I shipped four enterprise products on a shared React and TypeScript foundation with Python back ends, using early module boundaries and reusable components to make each release faster.

I've built ETL and machine learning systems over two petabytes and 80 million users on a 300-node cluster, completing work in 30 minutes that a certified vendor engineer completed in an hour. I also ran a real-time audience system scoring 20 million profiles every 30 minutes.

I've worked remotely from Jakarta with United States teams for five years across a fourteen-hour gap. Async ownership is central to how I work: if I can't explain it clearly in writing, it doesn't happen.

SQL and analytics have been a core part of my work for 11 years, from retention and funnel analysis to identifying product modes that are losing users. Claude Code is my default development loop, including automated browser testing to verify what I ship.