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Jack Mastrangelo
FounderFounder at Cobblestone
New York, New York, United States
FoundedCobblestone · YC
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About
Jack Mastrangelo is a cofounder of Cobblestone who previously worked as a software engineer at Ramp and Facebook.
Founder at CobblestoneYC W23
Intro paths
Jack went through Y Combinator (Winter 2023) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Jared Friedman, YC Group Partner — the partner who ran Cobblestone's batch and knows the company first-hand. YC profile ↗
In turn, Jack can intro founders to Cobblestone's investors below.
Cobblestone's investors · 2
Co-founders at Cobblestone
Frequently asked questions
- Who is Jack Mastrangelo?
- Jack Mastrangelo is a cofounder of Cobblestone who previously worked as a software engineer at Ramp and Facebook.
- Where does Jack Mastrangelo work?
- Jack Mastrangelo is Founder of Cobblestone.
- What companies did Jack Mastrangelo found?
- Jack Mastrangelo founded Cobblestone.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
Google mafia1,712
Also came through, then founded or led a company.
Ramp mafia28
Also came through, then founded or led a company.
Ramp mafia27
Also came through, then founded or led a company.
Gatherly mafia3
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Cobblestone'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