Software Engineer, Core Network Engineering

The Core Network Engineering team owns the end-to-end networking stack that connects OpenAI’s compute infrastructure — spanning global WAN/edge connectivity, data-center networking, and high-performance host/xPU networking used for large-scale training and inference workloads. This team is responsible for ensuring networking is never the bottleneck to model training efficiency, cluster reliability, or fleet expansion. They design and operate the systems that provide predictable, high-throughput,

Have experience building or operating large-scale networking or distributed systems infrastructure. Are comfortable working close to the hardware/software boundary. Have experience with Linux networking, kernel systems, NICs, RDMA, or performance-sensitive infrastructure software. Have worked with high-performance networking technologies such as InfiniBand, RoCE, DPDK, or large-scale Ethernet fabrics. Have experience with datacenter networking, WAN systems, or host networking stacks. Enjoy