Model Engineer, Mid-Training is open at xAI in Palo Alto, CA. The posting gives a salary of $160K - $250K. Posted on Oct 31, 2025, and still on xAI’s careers page when we last checked, on Nov 14, 2026.
About the role
Scale synthetic coding data to trillions of tokens with large-scale docker verification Distill the intelligence of flagship models into flash models through synthetic data generation Optimize mid-training data mixtures to boost the ceiling for RL Engineer long-context data recipes Develop robust and diverse evaluation for mid-training checkpoints BASIC QUALIFICATIONS: Experience writing production-quality code in…
The opening lines of the posting. The rest is on xAI’s careers page.
Hiring at xAI
xAI has 296 open roles right now, 20 of them remote. Most are in Engineering, Manufacturing & Trades and Operations. The median advertised salary across its roles with a published range is $205K. See all its roles
