Portrait of Cathy Chang
Now
Fraud product analyst at Persona
Studied
Harvey Mudd College
Outside
Climbing, murals, long approaches

About

Hi, I'm Cathy.

I like making things. Drones, e-paper displays, the occasional mural. This site is where I keep the projects I'm proud of.

A lot of it started at Harvey Mudd. I spent a year running a small team for our capstone, which became Droneye, and I've been building things on the side ever since.

These days I work at Persona, where I chase down fraud as a product analyst. Turns out the thing that makes me like climbing also makes me like this work. I enjoy puzzles where the answer is hiding in the details.

And when I'm not at a desk, I'm usually outside. Most weekends I'm climbing, somewhere with a long hike in and a longer one out.

What I've been up to

  1. Fraud Product Analyst · Persona

    Present

    I dig into how fraud moves across the platform and turn what I find into product changes. I also lead a small team of analysts.

  2. Legal Data Scientist · Phillips & Cohen

    Aug 2024 — Sep 2025

    At a whistleblower firm, I write Python to sift through terabytes of messy data, like supply chains, transactions, and financial reports, looking for patterns of fraud in legacy industries.

  3. AI Instructor · Inspirit AI

    Jun 2024 — Jun 2026

    I lecture and mentor classes of 20+ students on AI fundamentals, from regression and neural nets to NLP and transformers, and walk them through their own projects.

  4. Technical Product Manager II · Gordian

    Jun 2022 — Mar 2024

    At a Series A travel startup, I built the company's first MLOps platform to dynamically price airline products, which lifted weekly revenue by $15k. I also led a team of engineers and shipped a baggage widget that reached 1.2 million daily users.

  5. Software Intern · Nike

    Jun 2020 — Aug 2020

    I built an automated pipeline to process biometric data for the Nike Sports Research Lab, saving researchers about 45 hours a week.

  6. Hardware Engineering Intern · Northrop Grumman

    Jun 2019 — Aug 2019

    I designed a calibration device that cut power-system testing from three weeks to 30 minutes. It was later productized.

Say helloSee my work