Justin Hilliard
Principal - Investor at MIT Sloan School of Management
San Francisco Bay Area United States
Summary
🤩
Rockstar🎓
Top SchoolJustin Hilliard is a data-driven operator and investor with 11 years of experience building ML-driven growth products and scaling startups from seed to global distribution. He co-founded Superwall (YC S21), grew its SDK to reach every iPhone worldwide and drove product changes that generated over $200M in incremental GMV, then led algorithm, data and tech at Rebel Fund before becoming Principal - Investor. At Meta and Sonos he shipped production ML systems that materially improved engagement and financial metrics—most notably a bid-threshold model that cut costs 35% across Meta’s internal ads platform. He contributes backend work to open-source projects like CodeCombat, focusing on AI schema and chat integration, and is currently an MBA candidate at MIT Sloan, blending hands-on engineering, product strategy, and investor diligence. Not obvious from titles: he repeatedly connects ML models to revenue outcomes and investor-ready financial modeling, making him equally fluent in production engineering and deal-level due diligence.
11 years of coding experience
7 years of employment as a software developer
Y CombinatorMIT Sloan School of Management MBA, MIT Sloan School of Management MBA at MIT Sloan School of ManagementBachelor of Science (BS) Information Systems Minors: Statistics Business Administration, Bachelor of Science (BS) Information Systems Minors: Statistics Business Administration at Carnegie Mellon University
English, Spanish
Stackoverflow
169reputation
12kreached
2answers
2questions
Github Skills (19)
javascript10
back-end-development10
schema-design10
nodejs10
develop9
mongodb-database9
ai9
mongodb9
apidoc8
api8
mapkit6
design-patterns6
airflow6
corelocation6
dockerfile6
Programming languages (9)
Github contributions (5)
codecombat/codecombat
Jun 2023 - Jul 2023
Game for learning how to code.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 PRs, 9 pushes, 5 branches in 1 month
Contributions summary:Justin primarily contributed to updating schemas and models related to AI functionality within the CodeCombat game. Their commits include modifications to `ai_scenario`, `ai_chat_message`, `ai_project`, `ai_model`, and `ai_document` schemas, suggesting work on AI-driven features. The user also implemented chat message types and addressed bug fixes, demonstrating an understanding of the backend logic. These changes likely improved the integration of AI components within the CodeCombat platform.
game
sanghal/67475_postchair
Nov 2015 - Dec 2021
Contributions:2 PRs in 6 years 1 month
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.