Software Engineer, API Agents

Job summary

Responsibilities

We are looking for an experienced backend software engineer to build the core systems behind the next generation of agents. You will design reliable services and abstractions that help agents find the right context, use tools and computers, retain knowledge, coordinate over long-running workflows…

• Design, build, and operate the shared agent harness and backend infrastructure that power long-running, high-value workflows across OpenAI and third-party products.
• Build reusable capabilities across search and connected context, computer use, memory, tool execution, delegation, subagents, and multi-agent orchestration.
• Establish the foundations agents need to operate safely in production, including secure execution environments, identity and permissions, observability, evaluations, reliability…
• Partner with Research, Codex, infrastructure, applied product teams, and external developers to translate model progress, traces, evaluations, and real workflow needs into shared…

What they're looking for

• 7+ years of professional engineering experience, excluding internships, in relevant backend, infrastructure, platform, or product-driven engineering roles.
• Exceptional backend engineering fundamentals and a track record of leading complex systems from ambiguous problem statements to reliable production services.
• Proficiency in one or more backend languages such as Python, Go, Rust, TypeScript, or similar, with the ability to move comfortably across service, platform, and product…
• Strong systems design and operational judgment across distributed systems, APIs, workflow orchestration, search or storage, compute and execution, identity and permissions, or…
• Infrastructure depth paired with product judgment: you can abstract complex systems into simple, durable primitives that other engineers and developers can build on.

Tech stack

• Python
• Go
• Rust
• TypeScript