James Lindenbaum
InvestorFounderFounding Partner at Heavybit · Founder at Heroku
San Francisco, California, United States
Writes $500K – $5M checks
FoundedHeroku · YC
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About
Co-founder of Heroku and Heavybit who established the firm as a fund focused solely on developer company go-to-market. Advises on developer product design and early go-to-market and serves as a board member to Begin.
Invests in
AI & Machine LearningCybersecurityData & InfrastructureDeveloper ToolsEnterprise Software
Founder at HerokuYC W08
Intro paths
James went through Y Combinator (Winter 2008) — any YC alum in your network can reach them through the YC community.
In turn, James can intro founders to Heroku's investors below.
Heroku's investors · 9
Co-founders at Heroku



Investments
Per curated public sources.
Colleagues at Heavybit
Frequently asked questions
- Who is James Lindenbaum?
- Co-founder of Heroku and Heavybit who established the firm as a fund focused solely on developer company go-to-market. Advises on developer product design and early go-to-market and serves as a board member to Begin.
- Where does James Lindenbaum work?
- James Lindenbaum is Founder of Heroku and Founding Partner at Heavybit.
- What does James Lindenbaum invest in?
- James Lindenbaum invests in AI & Machine Learning, Cybersecurity, Data & Infrastructure, Developer Tools, Enterprise Software.
- What check size does James Lindenbaum write?
- James Lindenbaum typically writes checks of $500K – $5M.
- What companies did James Lindenbaum found?
- James Lindenbaum founded Heroku.
- What companies has James Lindenbaum invested in?
- Investments tracked here include Apollo, Doppler, Level Frames, Lockitron, MUX, PagerDuty, Revl.
Founder mafias
Y Combinator mafia10,627
Also came through, then founded or led a company.
Boston University mafia253
Also came through, then founded or led a company.
Heavybit mafia9
Also came through, then founded or led a company.
Heroku mafia8
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Heavybit'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
































