SEIN TUN
Senior Software Engineer
Problem-solving Systems Engineer
v1.0 / Profile
Senior Software Engineer
I'm a systems-focused engineer who treats product surfaces as control planes for reliability, governance, and safe distributed execution.
- 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
Focus
Control planes + reliability
Integration Delivery
Built a visual DSL control plane with React + TypeScript for multi-tenant pipeline configuration, with RBAC-aware editing and contract-first integration across 50+ services.
Reliability Engineering
Delivered idempotent orchestration patterns, queue isolation, and observability-driven incident workflows that improved MTTR and reduced retry-driven operational noise.
v2.0 / WORK
Work Experience
Client engagements across modernization, integration, and reliability engineering.
Abstract AI Pipeline Studio
Owned end-to-end frontend architecture for a multi-tenant pipeline platform with visual DSL workflows, contract-first API integration, and retry-safe configuration delivery.
“Owned and built the entire React + TanStack Query frontend from scratch, including an NLP-assisted node graph that translated plain-English conditions into SQL-like logic and AI-suggested source/destination/enrichment mappings, while integrating 50+ FastAPI services and reducing client-side errors by ~60%.”
services
50+
error_drop
60%
Splunk Platform Modernization
Delivered incremental modernization for enterprise dashboards with a strangler migration pattern, contract hardening, security remediation, and accessibility upgrades.
“Led Backbone/jQuery to React + TypeScript modernization, shipped a security-driven Highcharts v4 to v6 migration, and improved dashboard responsiveness by ~30%.”
efficiency
30%
pages
100s
Orchestration Engine
Built an at-least-once distributed orchestration system with Celery + RabbitMQ, queue isolation, and observability practices that improved MTTR by 35%.
“Handled 1,000+ concurrent events with idempotent, retry-safe processing and reduced operational overhead by 72%.”
concurrency
1,000+
overhead_drop
72%
v3.0 / PROJECTS
Personal Projects
Product-focused builds across platform architecture, AI workflows, and reliability.
Connoisr
Built diner + kitchen runtime surfaces with explicit route/UI/domain boundaries, offline behavior, and backend-ready repository seams for future Supabase integration.
“Architected a modular Next.js 16 + React 19 PWA with near-real-time sync, KDS orchestration, and CI quality gates across UI, domain, and E2E layers.”
tests
98
e2e_smoke
3
LibriScan
Led stakeholder-driven system design and shipped a human-in-the-loop digitization platform with Django + Huey orchestration, RBAC, and immutable provenance.
“Reduced manual transcription by ~90% with AWS Textract and achieved ~85% accuracy via human-in-the-loop review.”
reduction
90%
accuracy
85%