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Senior RL Training Engineer – Scalable AI Stack

Listing for: SpaceXAI
Apprenticeship/Internship position Listed on 2026-11-09
Job specializations:
  • Software Development
    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 seeks a Senior Model Engineer to help build our RL training framework. You will design and implement systems for RL workloads, from small-scale ablations to production runs, and collaborate across teams to push the limits of large-scale AI.

You should have hands-on experience with Python, PyTorch, JAX, Rust, or C++, plus a track record of training models with 1B+ parameters. The role rewards innovation with a competitive salary, equity, and comprehensive benefits.

The following role is for a Senior RL Training Engineer – Scalable AI Stack with SpaceXAI.

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

This posting is for the Senior RL Training Engineer – Scalable AI Stack role at SpaceXAI, based in Palo Alto, CA, United States.

Position Requirements

10+ Years work experience
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