OpenAI is seeking an experienced backend software engineer to design, build, and operate the core systems behind the next generation of agent technology. This on-site role is based in San Francisco, California, United States. You will design reliable services and abstractions that help agents locate the right context, use tools and computers, retain knowledge, coordinate long-running workflows, and act safely. The role combines deep backend and infrastructure work with strong product judgment, with opportunities to work across agent runtimes, orchestration, search, execution environments, identity and permissions, observability, and evaluations. Responsibilities include building the shared agent harness and backend infrastructure powering long-running, high-value workflows across OpenAI and external products; creating reusable capabilities across search and connected context, computer use, memory, tool execution, delegation, subagents, and multi-agent orchestration; establishing foundations for safe production operation including secure execution environments, identity and permissions, observability, evaluations, reliability, and cost and latency efficiency; partnering with Research, Codex, infrastructure, applied product teams, and external developers to translate model progress, traces, evaluations, and real workflow needs into shared capabilities with measurable gains in task completion, cost, and latency. Requirements include 7+ years of professional engineering experience in backend, infrastructure, platform, or product-driven roles; exceptional backend engineering fun

OpenAI is seeking an experienced backend software engineer to design, build, and operate the core systems behind the next generation of agent technology. This on-site role is based in San Francisco, California, United States. You will design reliable services and abstractions that help agents locate the right context, use tools and computers, retain knowledge, coordinate long-running workflows, and act safely. The role combines deep backend and infrastructure work with strong product judgment, with opportunities to work across agent runtimes, orchestration, search, execution environments, identity and permissions, observability, and evaluations. Responsibilities include building the shared agent harness and backend infrastructure powering long-running, high-value workflows across OpenAI and external products; creating reusable capabilities across search and connected context, computer use, memory, tool execution, delegation, subagents, and multi-agent orchestration; establishing foundations for safe production operation including secure execution environments, identity and permissions, observability, evaluations, reliability, and cost and latency efficiency; partnering with Research, Codex, infrastructure, applied product teams, and external developers to translate model progress, traces, evaluations, and real workflow needs into shared capabilities with measurable gains in task completion, cost, and latency. Requirements include 7+ years of professional engineering experience in backend, infrastructure, platform, or product-driven roles; exceptional backend engineering fun