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
Design Engineer
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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 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…
Founding Engineer
We are hiring a Founding Engineer to build and scale the systems that power Maestro — in person, in Austin. This role sits at the intersection of engineering, product, and operations. You will work directly with the…
Founding Engineer (Stealth)
Join an elite team to define how work happens in the agentic era. We're rethinking how organizations share context and coordinate, from first principles, with fundamentally new infrastructure for safe, governable, and…
Forward Deployed Engineer Intern
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Software Engineer Intern
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Founding Engineer
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