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About
Joohyun (CJ) Cha is the founder of Dawn Industries and previously co-founded and served as CTO of Zipper, a collage-based social media app that was acquired by MetaZone. Earlier, Cha worked as an ML engineer at Avalo analyzing genomic data for crop development and studied computer science at Brown.
CEO at Dawn IndustriesYC S26
Intro paths
Joohyun went through Y Combinator (Summer 2026) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Diana Hu, General Partner at Y Combinator — the partner who ran Dawn Industries's batch and knows the company first-hand. YC profile ↗
In turn, Joohyun can intro founders to Dawn Industries's investors below.
Dawn Industries's investors · 1
Co-founders at Dawn Industries
Frequently asked questions
- Who is Joohyun (CJ) Cha?
- Joohyun (CJ) Cha is the founder of Dawn Industries and previously co-founded and served as CTO of Zipper, a collage-based social media app that was acquired by MetaZone. Earlier, Cha worked as an ML engineer at Avalo analyzing genomic data for crop development and studied computer science at Brown.
- Where does Joohyun (CJ) Cha work?
- Joohyun (CJ) Cha is CEO of Dawn Industries.
- What companies did Joohyun (CJ) Cha found?
- Joohyun (CJ) Cha founded Dawn Industries.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
University of Illinois Urbana-Champaign mafia426
Also came through, then founded or led a company.
Brown University mafia326
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Dawn Industries's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights