Andreessen Horowitz
Global venture capital firm investing in technology companies.
Company facts
- Founded
- 2009
- Employees
- 500
- Headquarters
- United States
- CEO
- Marc Andreessen and Ben Horowitz
- Type
- Private
- Subsidiaries
- a16z Crypto, a16z New Media
About
Andreessen Horowitz (a16z) is a venture capital firm founded in 2009 by Marc Andreessen and Ben Horowitz. It invests in technology‑focused companies at any stage—from seed to late‑stage—across sectors such as consumer, enterprise, bio/healthcare, crypto, fintech, and gaming. Leveraging a team of partners who are former founders, CEOs, and CTOs, a16z offers portfolio companies access to a deep network of technical talent, executive expertise, and industry connections. This integrated support helps entrepreneurs accelerate product development, market entry, and growth, positioning them for long‑term success.
Open positions
Founding Engineer
Founding engineer — the most senior technical hire — at Omi Health, a pet-health startup running dog longevity tests. You set technical direction and own delivery end-to-end: Python/FastAPI on Postgres/Supabase, a SwiftUI iOS app, React/TanStack web, AWS with Terraform, plus production LLM features, pet-health data modeling, and hostile integrations.
Founding AI Engineer
The commercial real estate space is ripe for disruption. The industry has exploded in size and revenue, but still runs on fragmented CRMs, legacy loan systems, email, spreadsheets, phone calls, and document portals.…
Founding Engineer
The commercial real estate space is ripe for disruption. The industry has exploded in size and revenue, but still runs on fragmented CRMs, legacy loan systems, email, spreadsheets, phone calls, and document portals.…
Founding Engineer
About Cluster Cluster’s mission is to become the infrastructure layer between agents and markets. Since launching a few months ago, we’re already helping 50+ high growth startups (among them other a16z speedrun and YC…
Founding Engineer (Physical AI Infrastructure)
The role: Build the control plane and data plane for physical AI. Munari must run training, simulation, evaluation, data processing, and inference workloads across public cloud, customer-owned infrastructure, robotics…
Forward Deployed Engineer Intern
Forward Deployed Engineer Intern San Francisco · Summer · In-person What we do We're building Infragrid to end the tax of manual financial work. We capture how businesses operate (SOPs, screen recordings, and analyst…
Software Engineer Intern
Software Engineering Intern Location: San Francisco Term: Summer Work Type: In-person About Infragrid We’re building Infragrid to end the tax of manual financial work. By capturing how businesses operate—using SOPs,…
Founding ML Engineer
About Electrokare Electrokare builds foundation models for human physiology. We develop ai models for a subset of human health use cases, starting with models that estimate blood-level physiology from cardiovascular…
Founding Member of Technical Staff
Founding Member of Technical Staff Location: San Francisco, CA - in person Type: Full-time Compensation: Meaningful equity About Tenera Tenera is building the product decision layer for agents and humans using…