Seed-stage VC, US
Heavybit
Venture capital firm · San Francisco · Founded 2013
Quick read
Heavybit is a seed-stage venture capital firm founded in 2013 and headquartered in San Francisco, CA. It's the only fund focused exclusively on developer-first startups, writing $500K–$3M checks into pre-seed and seed companies building infrastructure, cybersecurity, and enterprise software. In July 2025, it closed two new funds totaling over $180 million.
Key facts
- Founded
- 2013
- Founders
- James Lindenbaum, Tom Drummond
- Employees
- 18
- Sectors
- devtools, enterprise, security, ai
- Website
- www.heavybit.com
Investment thesis
Heavybit invests at pre-seed and seed stage exclusively in developer-first companies — infrastructure, cybersecurity, and enterprise software — writing $500K–$3M checks into technical founders building category-defining products before the market catches up.
Recent activity
- Jan 2026pressHeavybit's 'Open Source Ready' podcast published its 2025 year-in-review episode, covering sustainability, MCPs, vulnerabilities, and infrastructure, with predictions for 2026. x.com
- Jul 2025fundraiseHeavybit closed two new funds — its fifth flagship pre-seed/seed fund and its second opportunity fund — with a combined total of over $180 million. everythingstartups.com
- 2025fundraiseHeavybit announced an $80 million venture capital fund, expanding check sizes to $500K–$3M and broadening scope to include early-stage devtool and enterprise software companies globally. x.com
- 2025investmentHeavybit backed exe.dev at inception, a developer tools company co-founded by David Crawshaw (Tailscale) and Josh Bleecher Snyder. linkedin.com
- 2025investmentHeavybit co-invested in LanceDB's $30M Series A (led by Theory Ventures) and Eventual's $30M total funding, both building multimodal data infrastructure for the AI stack. linkedin.com
Notable investments
- exe.devPre-seed2025linkedin.com
- LanceDBSeries A2025linkedin.com
- EventualSeed2025linkedin.com
Key people
Named individuals at the firm. We don't expose direct email or phone — use their LinkedIn for outreach.
- James Lindenbaum · Co-founder
- Tom Drummond · General Partner
- Joseph Ruscio · General Partner
- Susie S. · Chief Financial Officer
- Andrew Park · Partner
- Andrea Echstenkamper · Team Member
Sources
Other VCs in United States
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- Benchmark Capital · Early-stage VC, San Francisco·
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- Khosla Ventures · Multi-stage VC, Menlo Park·
- Greylock Partners · Early-stage VC, Menlo Park
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Frequently asked
What is Heavybit?+
Heavybit is a seed-stage venture capital firm founded in 2013 and headquartered in San Francisco, CA. It's the only fund focused exclusively on developer-first startups, writing $500K–$3M checks into pre-seed and seed companies building infrastructure, cybersecurity, and enterprise software.
Where is Heavybit headquartered?+
Heavybit is headquartered in San Francisco, United States.
When was Heavybit founded?+
Heavybit was founded in 2013 by James Lindenbaum, Tom Drummond.
What sectors does Heavybit invest in?+
Heavybit focuses on devtools, enterprise, security, ai. They primarily invest in these sectors.
How do I prepare for a meeting with Heavybit?+
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