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JC

Justin Chang

San Francisco, CA

Justin Chang

Sr. AI/ML Engineer — 9 yrs product & ML experience

Let's Connect

9+

Years

4

Companies

33+

Shipped

Top Tracks

1

Improved model action rate by 15% and doubled enforcement for critical harm categories including human exploitation, housing discrimination, and racial discrimination

Meta15% improvement

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2

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

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3

Built end‑to‑end SaaS that runs YOLO‑based human & dog action detection on user RTSP streams

Amor Software LLC

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4

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

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5

Served as lead frontend engineer for ShopRite's Downtime Dollars campaign, building React-based UI serving 200,000+ daily users

Dabbl200k+ daily users

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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

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