Justin Chang
Sr. AI/ML Engineer — 9 yrs product & ML experience
9+
Years
4
Companies
33+
Shipped
Top Tracks
Improved model action rate by 15% and doubled enforcement for critical harm categories including human exploitation, housing discrimination, and racial discrimination
Meta15% improvement
Increased sub-contractor MAU by 30% as lead engineer on three-person team, directly addressing the platform's most critical growth bottleneck
Building Connected30% MAU increase
Built end‑to‑end SaaS that runs YOLO‑based human & dog action detection on user RTSP streams
Amor Software LLC
Architected and built innovative audit system to ensure synchronization between metric definitions and code implementations, expanding coverage from 0% to 80% of all ads metrics
Meta0% → 80% coverage
Served as lead frontend engineer for ShopRite's Downtime Dollars campaign, building React-based UI serving 200,000+ daily users
Dabbl200k+ daily users
Skills
Full Stack
React · Next.js · Django · TypeScript
ML & AI
PyTorch · Hugging Face · Transformers · VLMs
Cloud & DevOps
AWS · Kubernetes · Docker · Fly.io
Data
Postgres · Redis · Pandas · Celery
Education
University of California, Los Angeles (UCLA)
B.A. Philosophy
Jun 2013
Columbia University
Post-Bac Pre-Med Program
Sep 2014 – Sep 2015

