David Langer
InvestorFounderFounder & Managing Partner at LIONHEART VENTURES · CEO at Zesty · Founder & Managing Partner at Lionheart Ventures
San Francisco Bay Area
FoundedLionheart VenturesZesty · YC
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About
Two-time technology entrepreneur and former CEO who founded Zesty (acquired by Square) and co-founded GroupSpaces. Active angel investor and advocate for founder mental health, with an MA in Mathematics from Oxford.
Contact· self-published, not guessed
CEO at ZestyYC W14
Intro paths
David went through Y Combinator (Winter 2014) — any YC alum in your network can reach them through the YC community.
In turn, David can intro founders to Zesty's investors below.
Zesty's investors · 22
Co-founders at Zesty

Founder & Managing Partner at Lionheart Ventures
Intro paths
In turn, David can intro founders to Lionheart Ventures's investors below.
Lionheart Ventures's investors · 2
Colleagues at LIONHEART VENTURES
Frequently asked questions
- Who is David Langer?
- Two-time technology entrepreneur and former CEO who founded Zesty (acquired by Square) and co-founded GroupSpaces. Active angel investor and advocate for founder mental health, with an MA in Mathematics from Oxford.
- Where does David Langer work?
- David Langer is Founder & Managing Partner of Lionheart Ventures and Founder & Managing Partner at LIONHEART VENTURES and CEO at Zesty.
- What companies did David Langer found?
- David Langer founded Lionheart Ventures, Zesty.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
University of Oxford mafia782
Also came through, then founded or led a company.
LIONHEART VENTURES mafia4
Also came through, then founded or led a company.
Gray Swan mafia2
Also came through, then founded or led a company.
Josi Health mafia2
Also came through, then founded or led a company.
About this profile. Compiled from public sources — LIONHEART VENTURES'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































