PrimeSet is a syndicate of senior engineers, engineering leaders, and experienced operators who co-invest alongside top-tier VCs and provide founders with technical network access. Based in San Francisco, it primarily invests at the seed and Series A stages across enterprise software, AI, and developer tools.
Their most common stage is seed (73% of deals). Average disclosed round size is $9.5M (across 10 rounds with reported amounts).
Portfolio
11
Fund Size
—
Top Stage
Seed
Last 12 Mo
1
Team
Adam Ballai
CEO Revops. Director of Eng Stripe. First engineer and senior engineering manager Twilio
Amir Salek
Senior Director of Engineering Google
Anand Rangarajan
Google Site Lead Bangalore, Engineering Director
Donald Sumbry
Head of Production Engineering at Uber. Director of Cloud Services at Twilio
Lien Mamitsuka
Director of Engineering at Twitter
Rob Benson
VP of Engineering, Design and Product at Lightstep. Senior Director of Engineering at Twitter
Srinivasan Venkatachary
Senior Director at Apple, CTO at Laskerlike, Director of Eng at Google
Ryan King
Principal Engineer CZI, Head of Eng Bolt, Engineering lead twitter
Cailen DSa
VP of Sales at Truework. Head of Sales Front. First sales hire at Box and Dropbox
Mo Afshar
CEO Spoken, VP Oracle
Siva Gurumurthy
VP Engineering at KeepTruckin
Tony Lee
VP of Engineering at Dropbox, VP Eng at Zendesk, Box, Bitcasa
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
Portfolio
| Company | Round | Amount | Date |
|---|---|---|---|
 Deductive AI | Seed | $7.5M | Nov 2025 |
 c/side | Seed | $6M | Sep 2024 |
 Emi | Seed | $11M | Feb 2022 |
 Metaview | Seed | — | Dec 2021 |
 Commerce Layer | Series A | $6M | May 2020 |
 Moonbounce | Unknown | $12M | — |
 FedML | Seed | $11.5M | — |
 Pixee | Seed | $15M | — |
 Sika Health | Seed | $5M | — |
 bitdrift | Series A | $15M | — |
| Ccside | Seed | $6M | — |
Top Co-Investors
Last updated: 9 September 2026