Senior Backend Engineer, Agent Infrastructure (AI Startup)

A fast-growing startup building infrastructure for AI agents wants a senior, backend-leaning engineer who can run projects start to finish and eventually take on wider technical leadership. Demand from enterprise buyers currently outpaces engineering capacity, so this hire will have real influence on how the team scales.

Your focus

• Design and build foundational agent components such as sandboxes, an LLM routing layer, evaluation tooling, memory and observability
• Deliver them as self-contained deployments running on bare metal for government, banking and large enterprise customers
• Take projects from design choices all the way to live systems, working entirely independently
• Serve as a technical lead: set direction, coach colleagues and contribute to team growth
• Work directly with customers to clear blockers in their deployments

What you bring

• Five to ten years as a full stack engineer, with proven zero-to-one ownership at a startup or a large technology company
• Strong Python and TypeScript with Next.js
• Deep knowledge of Kubernetes, Helm and Docker
• Willingness and ability to lead engineers and manage people
• A BS in computer science or a related STEM field
• Plus: direct experience with agents, LLMs, evals, sandboxing or observability, and prior tech-lead experience

On-site in the San Francisco Bay Area, five days a week. Visa transfers and new visa sponsorship are both possible.