# Sr. Software Engineer, Kernels/CUDA (C++) at xAI

- Company: xAI
- What the company does: SpaceXAI builds Grok — frontier AI models for reasoning, voice, image generation, and more. Build with the Grok API. Backed by Lightspeed, Sequoia and a16z.
- Company website: https://x.ai/
- Type: Startups (AI role)
- Level: Senior
- Location: Palo Alto, CA
- Work setup: On-site
- Pay: $220K to $357K base salary per year (USD)
- Posted: 2026-11-05
- Apply by: 2026-12-20
- Apply: https://job-boards.greenhouse.io/xai/jobs/5286869007?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/xai-sr-software-engineer-kernels-cuda-c/

## About the role

We are building one of the world’s largest AI supercomputers from the ground up. As part of the Compute Infrastructure team, you will own both the raw GPU supercomputer and the platform layer that runs on top of it. You will work across the full stack — from low-level GPU kernel optimizations and Linux kernel internals to massive-scale orchestration and virtualization — to make training and inference at SpaceXSI as fast, reliable, and scalable as possible. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- 5+ years of experience with low-level system programming in C/C++

Tags: Infrastructure

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/xai-sr-software-engineer-kernels-cuda-c/