Model Engineer, RL Training Framework

MODEL ENGINEER, RL TRAINING FRAMEWORK

The RL infrastructure team is looking for an engineer to help develop our RL training framework.

RESPONSIBILITIES:

Design and implement the systems backing all RL workloads at SpaceXSI, from small scale ablations to production training runs

Profile, debug, and optimize end-to-end training performance

Improve scalability and observability of the RL stack

BASIC QUALIFICATIONS:

Experience writing production-quality code in Python, PyTorch, JAX, Rust, or C++

PREFERRED SKILLS AND EXPERIENCE:

Experience building, debugging, and optimizing efficiency of large-scale distributed systems

Experience with large scale LLM training infrastructure

Strong knowledge of reinforcement learning techniques

Experience with RL numerics

Comfortable diving into unfamiliar areas and solving problems at all levels of the stack

COMPENSATION AND BENEFITS:

$180,000 - $440,000 USD

Base salary is just one part of our total rewards package at SpaceXSI, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks.