About Sein Tun
v1.0 / Profile
Senior Software Engineer
I'm a systems-focused full stack engineer with 7+ years shipping production React/TypeScript and Python systems, embedded as a lead engineer with Splunk, Abstract Security, and Tenable.
- I continuously learn and apply new tools where they create measurable value.
- I favor stable, thoroughly tested architecture over hype-driven adoption.
- I move quickly when needed without compromising quality, maintainability, or production safety.
Role scope
Senior Software Engineer & Systems Designer
Core stack
React/TypeScript + Python (FastAPI/Django)
Focus
Control planes + reliability
Integration Delivery
Architected a no-code security-pipeline builder in React + TypeScript, from zero to GA, with RBAC-gated controls and 50+ FastAPI endpoints behind typed contracts.
Reliability Engineering
Built an event-processing pipeline with idempotency keys, backoff and dead-letter isolation, and cut mean time to resolution by 35% while owning on-call for the integrations.