Senior Founding Backend Engineer - Low-Latency, Scalable Systems

Arbor AI, Inc; Mountain View (CA); On-site; USD 160,000 - 220,000; Full time

Job summary

Arbor AI in Mountain View is hiring a backend/system engineer to build low-latency serving and delivery systems powering monetization, with end-to-end ownership from design to rollout. You will work in a small, in-office team focusing on performance, measurement rigour, and scalable core blocks.

You will join early as one of the first ten employees, collaborating closely with founders on architecture and engineering strategy, while delivering production-grade systems under real traffic.

Qualifications

• Strong computer science fundamentals and ability to turn them into production-grade systems.
• Proven backend and distributed systems experience in high-throughput environments.
• Experience building or scaling low-latency, high-QPS systems with real ownership.
• Production engineering and debugging depth; protect correctness even when speed is tempting.
• Ability to own a technical component end to end from design through rollout and reliability.

Responsibilities

• Low-latency serving and decisioning: request handling, ranking, and auction flows under real traffic.
• Delivery infrastructure merchants can rely on: targeting, pacing, campaign management, plumbing from decisions to outcomes.
• Measurement systems for attribution, reporting, incrementality, and experimentation with correctness.
• Platform architecture for performance, scalability, and reliability; latency and correctness non-negotiable.
• AI-accelerated engineering practices to speed up design, debugging and iteration with rigorous judgement.
• Founder-level partnership: collaborate with founders on architecture and hiring, raising engineering quality across the team.

Skills

Backend development

Distributed systems

High throughput

Production engineering

End-to-end ownership

Job description

Arbor AI in Mountain View is hiring a backend/system engineer to build low-latency serving and delivery systems powering monetization, with end-to-end ownership from design to rollout. You will work in a small, in-office team focusing on performance, measurement rigour, and scalable core blocks.

You will join early as one of the first ten employees, collaborating closely with founders on architecture and engineering strategy, while delivering production-grade systems under real traffic.