David Langer
InvestorFounderFounder and Managing Partner at LIONHEART VENTURES · Founder/CEO at Zesty
San Francisco Bay Area
FoundedZesty · YC
About
David Langer is the founder and managing partner of Lionheart Ventures, an early-stage venture capital firm. He previously founded and served as CEO of Zesty, a corporate catering company that raised over $20 million from investors including Index Ventures and Founders Fund before its acquisition by Square in 2018, and co-founded GroupSpare, a London-based SaaS platform for membership groups. Langer has invested as an angel in more than 20 companies and holds a mathematics degree from St Anne's College, Oxford.
Contact· self-published, not guessed
Founder/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 · 7
Co-founders at Zesty
Experience
- Lionheart VenturesFounder & Managing Partnercurrent2018 — presentSan Francisco Bay Area
- Josi HealthInvestorcurrent2025 — present
- Gray Swan AIInvestorcurrent2025 — present
- NeuroBionicsInvestorcurrent2025 — present
- Lucid ComputingInvestorcurrent2025 — present
- Wonder SciencesInvestorcurrent2024 — present
- SoftmaxInvestorcurrent2024 — presentSan Francisco, California, United States
- GoodfireInvestorcurrent2024 — present
- NuancedInvestorcurrent2024 — present
- Reprompt (YC W24)Investorcurrent2024 — present
- Piramidal (YC W24)Investorcurrent2024 — presentSan Francisco Bay Area
- FareonInvestorcurrent2024 — presentSan Francisco Bay Area
- 2A BiosciencesInvestorcurrent2024 — present
- HealthcareAgents / Encultured AIInvestorcurrent2023 — presentSan Francisco Bay Area
- AnthropicInvestorcurrent2023 — presentSan Francisco Bay Area
- Solum Health (YC 22)Investorcurrent2022 — presentBogotá, Capital District, Colombia
- Xylo BioInvestorcurrent2022 — presentSydney, New South Wales, Australia
- Lykos TherapeuticsInvestorcurrent2022 — presentSanta Cruz, California, United States
- Trek HealthInvestorcurrent2022 — presentSan Francisco Bay Area
- CognigenicsInvestor & Board Membercurrent2022 — presentEagle, Idaho, United States
- Progressive Therapeutics Inc (PTI)Investorcurrent2022 — presentSan Francisco Bay Area
- Outro HealthInvestorcurrent2022 — presentGreater Toronto Area, Canada
- WellSetInvestorcurrent2022 — presentLos Angeles, California, United States
- Luminous Mind, Inc.Investorcurrent2022 — presentBoston, Massachusetts, United States
- Woven ScienceInvestorcurrent2022 — presentNew York, New York, United States
- Carbon CrusherInvestorcurrent2022 — presentOslo, Norway
- Clerkenwell HealthInvestorcurrent2022 — presentGreater London, England, United Kingdom
- HomecomingInvestorcurrent2021 — presentGreater Toronto Area, Canada
- Causative LabsInvestorcurrent2021 — presentSan Francisco Bay Area
- Mindstate Design LabsInvestorcurrent2021 — presentPittsburgh, Pennsylvania, United States
- WavepathsInvestorcurrent2021 — presentGreater London, England, United Kingdom
- Journey ClinicalInvestorcurrent2021 — presentNew York, New York, United States
- Reconnect LabsInvestor & Board Membercurrent2021 — presentZurich, Switzerland
- Lief TherapeuticsInvestorcurrent2021 — presentSan Francisco, California, United States
- Amphibian CapitalCo-founder & Board Membercurrent2021 — present
- Journey ColabInvestorcurrent2021 — presentSan Francisco Bay Area
- TRIPP, Inc.Investorcurrent2021 — presentLos Angeles, California, United States
- Dimensions HealingInvestorcurrent2021 — presentGreater Toronto Area, Canada
- Fathom RadiantInvestorcurrent2020 — presentPalo Alto, California, United States
- Bexson BiomedicalInvestorcurrent2020 — presentSanta Barbara, California, United States
Skills & more
From David's professional profile.
Colleagues at LIONHEART VENTURES
Frequently asked questions
- Who is David Langer?
- David Langer is the founder and managing partner of Lionheart Ventures, an early-stage venture capital firm. He previously founded and served as CEO of Zesty, a corporate catering company that raised over $20 million from investors including Index Ventures and Founders Fund before its acquisition by Square in 2018, and co-founded GroupSpare, a London-based SaaS platform for membership groups. Langer has invested as an angel in more than 20 companies and holds a mathematics degree from St Anne's College, Oxford.
- Where does David Langer work?
- David Langer is Founder/CEO of Zesty and Founder and Managing Partner at LIONHEART VENTURES.
- What companies did David Langer found?
- David Langer founded Zesty.
- Where did David Langer go to school?
- David Langer studied at University of Oxford (MA (Hons), Mathematics); Tiffin School.
Founder mafias
Y Combinator mafia8,773
Also came through, then founded or led a company.
+ 8,766 more
University of Oxford mafia290
Also came through, then founded or led a company.
+ 283 more
Anthropic mafia38
Also came through, then founded or led a company.
+ 31 more
Goodfire mafia3
Also came through, then founded or led a company.
Gray Swan mafia2
Also came through, then founded or led a company.
Same school
Also attended University of Oxford990
+ 984 more


























































