Abhinav User

At SquareX, acquired by Zscaler, I build secure browser and cloud platforms used by customers at scale.

I architected a documentation-sharing platform for 80+ customers and 40,000+ concurrent users, with magic links, timed access, one-time viewing, and no credential exposure. I also built multi-region service-health monitoring and an OIDC authentication layer with Kafka-driven cache invalidation.

I doubled throughput and reduced per-tab memory by 30% in a real-time content-processing engine, and shipped 56+ custom Chrome APIs while carrying a Chromium fork through seven major version cycles. I also ported the browser protection stack to Firefox on Android, including security, data leak prevention, and enterprise access controls.

Outside work, I built Rituals, an open-source social habit-tracking app with peer-to-peer image sharing, and ZipZap, a Rust/WASM zip library that reduced client-side memory use by over 80%. I also co-created browser.security, showcased at DEF CON and covered by Forbes.