Heavybit is a San Francisco-based early-stage venture capital firm and the leading investor in enterprise infrastructure, backing developer-first startups from day zero. Founded in 2013, the firm provides capital and hands-on go-to-market support to technical founders building cloud-native infrastructure, DevOps, DevSecOps, and AI-native solutions.
31% of their portfolio is in Developer Tools. Deal activity increased 100% year-over-year (6 deals in the last 12 months). Average disclosed round size is $19.4M (across 42 rounds with reported amounts).
Portfolio
37
Fund Size
$180M
Top Stage
Seed
Last 12 Mo
7
Team
James Lindenbaum
Founding Partner
Diana Reyes
Office Manager & Executive Assistant
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
45 investments
| Company | Round | Amount | Date |
|---|---|---|---|
| RReo | Series A | $11.3M | Jul 2026 |
 Modiqo | Pre-Seed | $3M | May 2026 |
 Duckbill | Seed | $7.8M | Feb 2026 |
 Musical AI | Unknown | $4.5M | Jan 2026 |
| RReo | Seed | — | Nov 2025 |
| MMilestone | Seed | $10M | Nov 2025 |
 Reo.dev | Seed | $4M | Oct 2025 |
 Tailscale | Growth | — | Apr 2025 |
 Kosli | Series A | $10M | Jan 2025 |
 Workbrew | Seed | $5M | Nov 2024 |
 LocalStack | Series A | $25M | Nov 2024 |
 Replicate | Series B | — | Dec 2023 |
| Kosli | Seed | $3.1M | Nov 2022 |
| MMetrist | Seed | $5.5M | Nov 2022 |
| JJeli | Series A | $15M | Sep 2022 |
 Groundcover | Series A | $20M | Sep 2022 |
 Mobot | Series A | $12.5M | Aug 2022 |
| Tailscale | Series B | $100M | May 2022 |
 RADAR | Series C | $55M | Feb 2022 |
 Mobot | Series A | $12.5M | Jan 2022 |
 Tonic | Series B | $35M | Sep 2021 |
 Replicated | Series C | $50M | Jan 2021 |
| RReplicated, Inc. | Series C | $50M | Jan 2021 |
 Aserto | Seed | $5.1M | Jan 2021 |
| RReplicated (company) | Series C | $50M | Jan 2021 |
Page 1 of 2
Top Co-Investors
Accel6 shared
Boldstart Ventures6 shared
Harrison Metal5 shared
Two Sigma Ventures5 shared
Insight Partners4 shared
CRV4 shared
Uncork Capital4 shared
Amplify Partners4 shared
Threshold Ventures3 shared
Uncorrelated Ventures3 shared
Lead Edge Capital3 shared
Headline3 shared
Industry Ventures2 shared
Top Tier Capital Partners2 shared
Scale Venture Partners2 shared
Baseline Ventures2 shared
GGV Capital2 shared
Y Combinator2 shared
GV2 shared
Cota Capital2 shared
Last updated: 8 September 2026