Partner
Zack Isaacson
VENTURE PARTNER, Rackhouse Ventures
- Firm
- Rackhouse Ventures
- Title
- VENTURE PARTNER
- Role
- Venture partner
- Known as
- Investor
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Record updated 1 October 2026
About
Zack Isaacson has spent his career building Venture Capital-backed startups in the San Francisco Bay Area. Currently, he runs Pac Heights Partners, a boutique agency helping build software engineering teams for deep tech startups. Previously, he co-founded Sweat Equity Ventures, a VC firm backed by Reid Hoffman. Prior, he worked at Sutter Hill Ventures building out early stage teams with Mike Speiser. Zack started his career in agencies and scaling Sumo Logic from two founders to a team of 350+ employees worldwide.
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