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 ML Engineer
Founding ML engineer at Philyron (a16z Speedrun company) building predictive maintenance for commercial ships: you own the full loop end to end — satellite data ingestion (MQTT, AWS), fusing live sensor data with maintenance records, training anomaly-detection and failure-prediction models, and shipping them to production. Onsite in San Francisco; $130–150k plus ~1.5% equity.
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
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…
Partner 6, Executive Assistant, New York
Founded in Silicon Valley in 2009 by Marc Andreessen and Ben Horowitz, Andreessen Horowitz (aka a16z) is a venture capital firm that backs bold entrepreneurs building the future through technology. We are stage…
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 ML Engineer
The role: Own the loop from raw robot experience to a model running on real hardware. Munari observes what robots see, sense, decide, and do. We want to use that data to detect abnormal behavior, understand failures,…
Member of Technical Staff, Intern
At Primitive Labs our mission is to make human behavior a first-class primitive of software development. As an intern at Primitive Labs, you will build at the frontier alongside the founding team, across both research…
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…
Electrical / Mechanical Engineer
Responsibilities Design mechanical components, mounts, and enclosures for electronics and controls on heavy equipment Design electrical systems including power distribution, wiring, and control interfaces Integrate…
Member of Technical Staff
Member of Technical Staff San Francisco, CA · Full-time · In-person For exceptional builders who don't fit in a box Former founder? Research engineer? Generalist who's been the secret weapon on every team you've…
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…
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 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…