Software Engineer, Core Network Engineering

The Core Network Engineering team at OpenAI owns the end-to-end networking stack that connects OpenAI’s compute infrastructure. We’re looking for engineers to help build and operate the networking foundation behind OpenAI’s frontier AI systems.

Requirements

• Design, build, and operate networking systems that support large-scale AI training and inference infrastructure
• Improve performance, reliability, and scalability across host networking, datacenter fabrics, and WAN systems
• Develop automation for provisioning, configuration management, validation, upgrades, and lifecycle management of networking infrastructure
• Build tooling and observability systems for network health, performance analysis, debugging, and automated remediation
• Optimize network performance across technologies such as RDMA, RoCE, InfiniBand, Ethernet, and high-performance GPU interconnects
• Define and operationalize networking protocols, readiness criteria, and continuous validation systems
• Partner closely with compute, storage, hardware, and infrastructure teams to ensure networking scales predictably with fleet growth
• Contribute to architecture decisions around topology design, capacity planning, failure domains, and network reliability
• Diagnose complex distributed systems and networking issues across large heterogeneous compute environments