Founding Software Engineer
a16z-speedrun · Posted Sep 1, 2026
- San Francisco, California, United States
- On-site
- Visa sponsorship
Lead end‑to‑end system design and research for frontier AI products
Compensation
Competitive compensation + equity
Responsibilities
- Build pipelines that score, filter, and rank millions of user recordings each day using in‑house ML‑models and custom fraud detection systems
- Design scalable systems from scratch that automatically control millions of dollars in user rewards and ad spend
- Work directly with leading labs, assess their needs, and deliver high‑quality and heavily filtered recordings for their frontier models
- Collaborate closely with founders in a fast‑iteration environment, independently owning systems end‑to‑end with high autonomy
- Train state‑of‑the‑art internal models, public benchmarks, and technical publications using the one‑of‑a‑kind multi‑modal data we collect