Jeff Chang is currently the Director of Engineering, Head of Growth at WhatNot, the largest livestream shopping platform in the U.S. Jeff was previously the founder of Pastel Labs, a company building experimental products, including a software-as-a-service product designed to capture user video testimonials and an ed-tech marketplace for online tutoring. WhatNot acquired Pastel Labs. Jeff's investments include Linear, On Deck, Preemo, Supermove, and PopSQL.