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Senior RL Training Framework Engineer

Listing for: X AI
Apprenticeship/Internship position Listed on 2026-11-08
Job specializations:
  • Software Development
    Software Engineer, AI Engineer (Applied/Software)
Salary/Wage Range or Industry Benchmark: 180000 - 400000 USD Yearly USD 180000.00 400000.00 YEAR

Job Description & How to Apply Below

SpaceXSI in Palo Alto is seeking a Sr. Model Engineer to join our RL Training Framework team. You will design and implement the systems backing RL workloads, from small-scale ablations to production training runs, in a high-performance stack.

You will profile, debug, and optimize end-to-end training performance, and improve scalability and observability of the RL stack, enabling 1B+ parameter models and beyond. The role offers a competitive package with equity and comprehensive benefits.

We have an opening for a Senior RL Training Framework Engineer in Palo Alto, CA, United States within IT & Technology, Engineering.

We appreciate your interest in this position.

Join X AI and contribute to our ongoing work.

Take a moment to read everything above and see whether this role is right for you.

This posting is for the Senior RL Training Framework Engineer role at X AI, based in Palo Alto, CA, United States.

Position Requirements

10+ Years work experience
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