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
Omi Health is the most trusted destination for pet health, and the first place pet parents turn to for guidance. We run proprietary longevity tests for dogs and combine them with user-reported and historical data to…
Staff Hardware Engineer
At ChronoSpace, this engineer drives the mechanical design of a portable multi-camera capture rig used to collect data for AI that digitizes the physical world in 3D + time — designing camera housings and mounts across rig variations, iterating via rapid prototyping (Fusion 360), and scaling rig production with manufacturers.
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 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…
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…
AI Engineer
About the Company Kanu AI is your organization’s AI coworker that deploys in your own cloud, continuously learns from your data, team intelligence, and outputs, and uses that knowledge to encode and maintain workflows…
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 AI Product Design Lead
Founding AI Product Design Lead Location: Austin, TX (Hybrid, Northwest Hills office) Schedule: Full-time About Maestro Maestro is building the future of luxury travel: a member experience where world-class human…
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…