Host Systems Engineer - AI Hardware, Kernel & High-Perf I/O

OpenAI

United States

Remote

USD 150,000 - 190,000

Full time

14 days+

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Job summary

OpenAI’s Hardware organization is seeking an experienced systems software engineer to define and build the host software stack for our custom AI systems. You will work closely with hardware on performance-critical software, including Linux kernel drivers, high-throughput I/O paths, and system-scale networking like RDMA.

Responsibilities span architecture, implementation, bring-up, debugging, and performance optimization.

Qualifications

Experience designing host software for AI infrastructure.
Proficiency with Linux kernel drivers and userspace tooling.
Strong background in high-throughput, low-latency networking (RDMA).

Responsibilities

Design, implement, and debug host-side systems software for AI infrastructure, including Linux kernel drivers and supporting userspace components.
Build and optimize software paths for high-throughput, low-latency communication, including RDMA and related networking functionality.
Develop software around PCIe, DMA, NICs, accelerators, memory movement, and device interaction.
Bring up new hardware platforms and diagnose issues across kernel, firmware, networking, and hardware boundaries.
Build tooling for integration, testing, diagnostics, observability, qualification, and performance characterization.
Collaborate with hardware, networking, and platform teams to define interfaces and integrate new capabilities.