Software Engineer - Network (C++)

xAI

Palo Alto, CA; Seattle, WAPosted Jul 13, 2026 · 9h ago$180k – $440k

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Full-time$180k – $440kMid LevelHybridAI / ML

About this role

Join xAI's engineering team to develop core networking software for Colossus, a high-performance datacenter network powering frontier AI models. You will design, build, and operate software that maximizes performance and reliability, impacting training efficiency and model convergence.

What we are looking for

Develop routing and traffic-engineering algorithms
Write high-performance C/C++ for network switches
Solve problems in distributed systems and high-performance networking
Own full software lifecycle from design to deployment
Work on one of the largest AI supercomputers

Skills mentioned

C++

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Software Engineer - Network (C++) at xAI | Quick Apply