Member of Technical Staff - RL Inference

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Palo Alto, CAPosted 3 days ago

Role Overview

Xai is hiring a Member of Technical Staff - RL Inference. This is a full-time role in Palo Alto. posted 3 days ago. Full responsibilities, required qualifications, and the apply link are listed in the description below.

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Job description

ABOUT xAI

xAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure. All employees are expected to be hands-on and to contribute directly to the company’s mission. Leadership is given to those who show initiative and consistently deliver excellence. Work ethic and strong prioritization skills are important. All employees are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.

ABOUT THE ROLE:

The RL infrastructure team is looking for an engineer to help with low precision RL training and inference.

RESPONSIBILITIES:

Design and optimize our inference stack for all shapes of RL workloads at xAI, from small scale ablations to production training runs.
Analyze, profile and address performance bottlenecks in large scale RL systems
Work closely with the modelling team to efficiently implement novel RL techniques and algorithms

BASIC QUALIFICATIONS:

Experience in building, debugging, and optimizing efficiency of large-scale distributed systems
Experience in LLM inference
Proficiency in programming languages such as Python, C++ and/or Rust; frameworks such as PyTorch, Jax, CUDA
Willingness to dive deep and solve hardcore problems at all levels of the stack

PREFERRED SKILLS AND EXPERIENCE:

Strong knowledge in quantization and numerics in LLM inference and training
Experience in developing inference engines, e.g. SGLang, vLLM

xAI is an equal opportunity employer. For details on data processing, view our Recruitment Privacy Notice.

About Xai

Xai

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Frequently Asked Questions

How do I apply for the Member of Technical Staff - RL Inference position at Xai?

Use the Apply button above to submit your application directly to Xai. Most applications take less than 5 minutes if your resume and contact details are ready, and you'll be routed to the employer's official application system to finish.

Where is the Member of Technical Staff - RL Inference position at Xai located?

This position is based in Palo Alto. Xai has not indicated remote or hybrid options for this role, so candidates should plan for on-site work.

What does a Member of Technical Staff - RL Inference at Xai earn?

Xai has not disclosed a salary range in this posting. Many employers share specifics later in the interview process; you can also ask during a recruiter screen if compensation transparency is important to you.

When was the Member of Technical Staff - RL Inference role at Xai posted?

This role was posted on July 6, 2026 (3 days ago). It's still listed as actively hiring; we re-confirm openings against the source system multiple times per day and remove closed roles.