# Heavybit

> Heavybit is a San Francisco venture capital firm built for technical founders creating enterprise infrastructure, developer tools, AI systems, security products, and other software sold first to practitioners. It typically invests from inception through Series A, then pairs capital with structured operating support, a large advisor network, founder-to-founder learning, and practical help on product, pricing, sales, marketing, hiring, and enterprise readiness.

- **Founded:** 2013
- **Headquarters:** San Francisco, United States
- **Founders:** James Lindenbaum (Co-founder and Founding Partner), Tom Drummond (Co-founder and Managing Director)
- **Team size:** 45 employees in the supplied company record; LinkedIn lists 11-50 employees
- **Products:** Early-stage venture investment, Structured founder support, Founder and operator community, Heavybit Library, DevGuild and speaker programming
- **Notable:** Launched and supported more than 90 startups since 2013., Built a portfolio that includes Tailscale, LaunchDarkly, PagerDuty, Snyk, Sanity, Netlify, CircleCI, Contentful, Mux, and Replicate., Reported nine exits by 2019, including PagerDuty's IPO and acquisitions of Citus Data by Microsoft and Treasure Data by Arm.

## Products & services

- **Early-stage venture investment** — Initial checks generally ranging from $500,000 to $3 million, with the current website advertising $500,000 to $5 million from inception through Series A.
- **Structured founder support** — Tailored goals, board participation, twice-monthly partner office hours, specialist advisor sessions, and hands-on support across product, go-to-market, hiring, and operations.
- **Founder and operator community** — Private founder and team Slack groups, peer introductions, customer discovery sessions, founder events, and portfolio product discounts.
- **Heavybit Library** — A public knowledge base with more than 1,400 resources for technical founders and their teams, including articles, talks, videos, and operating playbooks.
- **DevGuild and speaker programming** — Developer-focused conferences and monthly sessions covering pricing, product marketing, community, enterprise readiness, demand generation, and developer experience.
- **Podcast and content support** — A podcast network plus startup kits, editorial guidance, production support, and courses that help early teams build credible category narratives.

## Achievements

- Launched and supported more than 90 startups since 2013.
- Built a portfolio that includes Tailscale, LaunchDarkly, PagerDuty, Snyk, Sanity, Netlify, CircleCI, Contentful, Mux, and Replicate.
- Reported nine exits by 2019, including PagerDuty's IPO and acquisitions of Citus Data by Microsoft and Treasure Data by Arm.
- Reported in 2019 that 90% of alumni had raised a subsequent funding round.
- Built an advisor network of more than 1,000 domain specialists and a library of more than 1,400 resources.
- Raised an $80 million fourth fund in 2022.
- Closed more than $180 million across Fund V and Opportunity Fund II in 2025, its largest collective raise at the time.
- Expanded from developer tools into a broader enterprise infrastructure thesis spanning AI, security, cloud, open source, DevOps, and DevSecOps.

## Latest updates

- **2026-02** — Heavybit announced an investment in Duckbill, an enterprise FP&A platform for forecasting and governing cloud and AI spend.
- **2026-01** — Heavybit welcomed Musical AI, whose platform manages licensing and attribution for generative media training data.
- **2026-01** — The firm published its community's 2026 AI predictions, including a focus on reinforcement learning, private models, and infrastructure economics.
- **2025-12** — Heavybit invested in Vibrant Labs, which builds simulation environments and evaluations for long-horizon AI agents.
- **2025-08** — Database and applied-AI founder Amir Zohrenejad joined as a part-time partner.
- **2025-07** — Heavybit closed more than $180 million across its fifth flagship pre-seed and seed fund and second opportunity fund.
- **2024-11** — Heavybit announced an investment in LocalStack, a local cloud development and testing platform.

## Links

- Website: https://www.heavybit.com
- LinkedIn: https://www.linkedin.com/company/heavybit
- Twitter/X: https://twitter.com/heavybit
- YouTube: https://www.youtube.com/c/heavybit
- Instagram: https://www.instagram.com/heavybitindustries/
- Facebook: https://www.facebook.com/heavybitindustries

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Profile page: https://yespress.io/heavybit
Published by YesPress — https://yespress.io
Last updated: 2026-08-15