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 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
Founding engineer (employee #3) at Motherboard Labs, an a16z speedrun-backed startup building an AI agent operating layer for fleets of robots and autonomous machines. You'll split time between hands-on customer deployments and shared platform work — integrations, agent tooling, and fine-tuning models for machine diagnostics — in person from San Francisco with 25–50% travel.
Founding Software Engineer
We’d love for you to join Basis . Rapid advances in frontier AI are shaping how billions of people work, learn, & live every day. Much of this advancement is due to scaling (more compute + more/better data → better…
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…
Member of Technical Staff, Intern
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Member of Technical Staff, Research
At Primitive Labs our mission is to make human behavior a first-class primitive of software development. In this role, you will build the research systems behind our behavioral intelligence agents. Your work will span…
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…
Member of Technical Staff
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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…
Member of Technical Staff, Founding Engineer
At Primitive Labs our mission is to make human behavior a first-class primitive of software development. As a founding engineer, you own areas of the system from design through production. Your work will span…
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 Engineer
About TAYA TAYA is a memory company. We use AI to help people remember what actually happened: what was said, what was promised, the idea you had and lost by lunch. Our first product is a voice-first AI you can talk…
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…
Founding Engineer
What we're building Cascade is an AI orchestration layer transforming how the physical world gets built. We analyze billions of signals to predict where major construction projects will happen next. Our clients include…