1. Home
  2. Jobs
  3. United States
  4. California
  5. Palo Alto
  6. AI Research Engineer
  7. Member of Technical Staff, Pre-training Scaling, Data and Eval
XA

Member of Technical Staff, Pre-training Scaling, Data and Eval

xAI
Posted onFeb 5, 2026
LocationPalo Alto, California, United States (On-site)
Employment typeFull-time
Salary$180k – $440k Yearly

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.

Tech Stack

  • Python
  • JAX and XLA
  • Rust / C++
  • Spark

Focus

  • Training trillion parameter neural networks at scale, as well as a variety of smaller specialized models.
  • Rapidly implementing the latest state-of-the-art methods from the deep learning literature.
  • Innovating new ideas for pretraining and new scaling paradigm.

Ideal Experience

  • Strong engineering skills with passion on model-hardware co-design.
  • Expert in ML and large model scaling, familiar with all kinds of scaling laws.
  • Familiar with distributed training, multi-GPU neural network training and experience on optimizing ML training efficiency.

Location

The role is based in the Bay Area [San Francisco and Palo Alto]. Candidates are expected to be located near the Bay Area or open to relocation.

Annual Salary Range

$180,000 - $440,000 USD

Benefits

Base salary is just one part of our total rewards package at xAI, 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.

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

xAI is an AI company founded by Elon Musk in 2023 with the mission to advance scientific discovery and gain a deeper understanding of the universe through artificial intelligence.

Similar jobs

You might also be interested in...

RA2w

Member of Technical Staff - Pre-Training

Reflection AI

San Francisco, California, United States (On-site)

CO1w

Senior Member of Technical Staff, Multimodal AI

Cohere

San Francisco, California, United States or Remote (Worldwide)

RA2w

Member of Technical Staff - Data Quality Engineer (Pre-training)

Reflection AI

San Francisco, California, United States (On-site)

TM5d

Research Engineer, Infrastructure, Training Systems

Thinking Machines Lab

San Francisco, California, United States (On-site)

$350k – $475k Yearly

RA2w

Member of Technical Staff - Data Ingestion Engineer

Reflection AI

San Francisco, California, United States (On-site)