Fundraising Fox
Justin Cohen
FounderCEO at Maritime Fusion
San Francisco, California, United States
FoundedMaritime Fusion · YC
Find your path to Justin
Sign up to see every warm intro you have to Justin
- Paths you didn't know you had: your email and LinkedIn already hold routes to Justin. We find them for you
- 2nd- and 3rd-degree connections: the friend-of-a-friend routes that take hours to manually find through your inbox or LinkedIn
- Answers now, not in days: momentum is everything in a raise. Skip asking around whether someone knows someone
Days of research, done the moment you sign in, with every route ranked by how warm it is.
About
Justin Cohen is a nuclear engineer and plasma physicist who previously held roles at Tesla, SpaceX, Princeton Plasma Physics Laboratory, and NC State, as well as attended Columbia University. He now leads Maritime Fusion, developing fusion reactor technology.
CEO at Maritime FusionYC W25
Intro paths
Justin went through Y Combinator (Winter 2025) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Aaron Epstein, General Partner at Y Combinator — the partner who ran Maritime Fusion's batch and knows the company first-hand. YC profile ↗
In turn, Justin can intro founders to Maritime Fusion's investors below.
Maritime Fusion's investors · 11
Co-founders at Maritime Fusion
Frequently asked questions
- Who is Justin Cohen?
- Justin Cohen is a nuclear engineer and plasma physicist who previously held roles at Tesla, SpaceX, Princeton Plasma Physics Laboratory, and NC State, as well as attended Columbia University. He now leads Maritime Fusion, developing fusion reactor technology.
- Where does Justin Cohen work?
- Justin Cohen is CEO of Maritime Fusion.
- What companies did Justin Cohen found?
- Justin Cohen founded Maritime Fusion.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
Columbia University mafia602
Also came through, then founded or led a company.
Tesla mafia188
Also came through, then founded or led a company.
North Carolina State University mafia116
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Maritime Fusion'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