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 engineers are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.

About The Team The AI Expert team strives to build AI Scientists, Engineers, and Professionals. We train Grok to solve the most challenging agentic tasks in the real world, which require long-horizon reasoning, planning, and decision making. We have started in some high-impact domains—including math, chemistry, biology, material science, and finance—and will expand to more. Our daily work includes model evaluation, data curation, and training recipe development. We also work closely with xAI enterprise and product teams to create and improve our products and services.

About The Role In this role you might:

• Innovate next-generation RL algorithms to unleash AI abilities in open-ended science developments and real-world professional work.
• Build evaluation for AI models in various applied domains.
• Build RL data infrastructure and generate training data.

Exceptional Candidates May Have

• Strong engineering abilities.
• Experience with data collection and data generation for LLMs.
• Optional: Research and professional experiences in non-CS domains, such as math, physics, and finance.

Location

• We hire engineers in Palo Alto. Our team usually works from the office 5 days a week but allow work-from-home days when required. Candidates are expected to be located near Palo Alto or open to relocation.

Interview Process After Submitting Your Application, The Team Reviews Your CV And Statement Of Exceptional Work. If Your Application Passes This Stage, You Will Be Invited To a 15-minute Interview ("phone Interview") During Which a Member Of Our Team Will Ask Some Basic Questions. If You Clear The Initial Phone Interview, You Will Enter The Main Process, Which Consists Of Four Technical Interviews

• Coding assessment in a language of your choice.
• Technical sessions (2): These sessions will be testing your ability to formulate, design and solve concrete problems in real world with LLM.
• Meet the Team: Present your past exceptional work and your vision with xAI to a small audience.

Our goal is to finish the main process within one week. All interviews will be conducted via Google Meet.

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