Software Engineer, API Agents

What this role involves

OpenAI is hiring a Software Engineer for the API Agents team to build the shared agent harness and backend infrastructure that power long-running, high-value workflows. The role involves designing reliable services for agent context, tool use, memory, coordination, and safe execution, requiring 7+ years of backend engineering experience. The position is software and systems engineering, not model training, and emphasizes strong backend fundamentals and product judgment.

Skills this posting asks for

• python
• go
• rust
• typescript
• backend engineering
• distributed systems
• api design
• workflow orchestration
• search
• storage
• compute
• execution environments
• identity
• permissions
• observability
• reliability
• cost efficiency
• latency efficiency
• agent harness
• tool execution
• multi-agent orchestration

Requirements

• 7 years of experience
• Level: senior

From the employer’s posting

About the Team API Agents builds the shared agent harness, tools, and infrastructure that turn OpenAI’s frontier models into systems that can reliably complete real work. We carry the capabilities behind Codex into a much broader set of products and workflows across software engineering, research,…