Software Engineer, AI accelerator Runtime

Job summary

Responsibilities

You will build the low-level device runtime that turns compiled programs into efficient, functional and performant execution on OpenAI’s custom AI accelerator. This software will schedule kernel launches, manage device memory and address spaces, coordinate synchronization, and expose reliable…

• Design and implement the low-level device runtime for OpenAI custom silicon.
• Build kernel-launch scheduling, command submission, queueing, dependency tracking, and completion handling.
• Manage device memory spaces, allocation, virtual-to-physical mappings, data movement, and lifetime across concurrent workloads.
• Implement synchronization primitives, events, barriers, streams, and ordering guarantees that are correct and efficient.
• Define clean interfaces between the runtime, drivers, firmware, compiler-generated code, kernels, and higher-level execution systems.

Tech stack

• C++
• Rust