Member of Technical Staff RL Training Framework
SpaceXAI builds frontier AI models and products including the Grok conversational assistant and a multimodal developer API.
Funding history
About SpaceXAI
SpaceXAI is a US-based AI company focused on accelerating scientific discovery and understanding the universe through reasoning, voice, image, video, and generative AI systems. Formerly xAI, it was acquired by SpaceX effective February 2, 2026, while continuing to operate the x.ai site and services.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will design and implement systems supporting reinforcement-learning workloads, from small-scale ablations through production training runs. You will profile, debug, and optimize end-to-end training performance while improving the scalability and observability of the reinforcement-learning stack.
Requirements
- Experience building, debugging, and optimizing large-scale distributed systems.
- Proficiency in Python, JAX, Rust, or C++.
Responsibilities
- Design and implement systems supporting reinforcement-learning workloads.
- Profile, debug, and optimize end-to-end training performance.
- Improve the scalability and observability of the reinforcement-learning stack.
Benefits
- Equity
- Medical coverage
- Vision coverage
- Dental coverage
- 401(k) retirement plan
- Short-term disability insurance
- Long-term disability insurance
- Life insurance
- Discounts and perks