Software Engineer - Network (C++)

Build core networking software for xAI’s Colossus datacenter fabric, developing routing and traffic-engineering algorithms and highly reliable real-time switch software. Own the full lifecycle—from design and implementation through deployment, monitoring, and iteration—while solving distributed systems and low-latency networking challenges that directly improve training efficiency and model convergence. Contribute to architecture/design/code reviews and validate ideas with prototypes and full-cluster experiments.