Software Engineer, Core Network Engineering

The role

You will design, build, and operate networking systems that support large-scale AI training and inference infrastructure. This includes improving performance and reliability across host networking, datacenter fabrics, and WAN systems.

What you will do

• Design, build, and operate networking systems for AI training and inference infrastructure
• Improve performance, reliability, and scalability across networking layers
• Develop automation for provisioning, configuration, validation, and lifecycle management
• Build tooling and observability systems for network health and debugging
• Optimize network performance across RDMA, RoCE, InfiniBand, Ethernet, and GPU interconnects
• Define and operationalize networking protocols and validation systems
• Partner with compute, storage, hardware, and infrastructure teams
• Contribute to architecture decisions for topology, capacity, and reliability
• Diagnose complex distributed systems and networking issues

Required qualifications

• Experience building or operating large-scale networking or distributed systems infrastructure
• Comfortable working close to the hardware/software boundary
• Experience with Linux networking, kernel systems, NICs, RDMA, or performance-sensitive infrastructure software
• Experience with datacenter networking, WAN systems, or host networking stacks
• Ability to write production software in C++, Python, or Go
• Strong systems fundamentals across networking, operating systems, distributed systems, or infrastructure engineering

Nice to have

• Experience with high-performance networking technologies such as InfiniBand, RoCE, DPDK, or large-scale Ethernet fabrics
• Enjoy debugging complex systems and performance bottlenecks across multiple layers of the stack

About the company

OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity.