JavaScript
Private
Sentry
Application performance monitoring and error tracking.
React
TypeScript
Type
JavaScript application
Stack
React, Python, ClickHouse
Year
2008
Duration
8+ years
Overview
What I built & why
Application performance monitoring, error tracking, and session replay. SDKs for 100+ platforms feed a React-based investigation UI.
Started as an open source Django project; now a widely used SaaS with a generous self-host license.
Highlights
Key deliverables
- ✓ Error + performance + replay
- ✓ Releases + source maps
- ✓ 100+ SDKs
- ✓ Self-host friendly
- ✓ React-based UI
Process
Challenge & solution
The challenge
Mobile traffic was outpacing desktop two-to-one, yet the existing experience was effectively unusable below 768px.
The solution
Wrote a zero-downtime migration pipeline that mirrored writes to both systems, then cut over after a clean shadow-read week.
More Work
Related projects
Let's Work Together
Want something like this built?
I work best with teams and founders who want a thoughtful partner, clean communication, and premium implementation without unnecessary layers.