Software Engineer - Evals

Be an Early ApplicantFull Timejunior

Palo Alto, California, United StatesPosted Today

Role Overview

Xai is hiring a entry-level Software Engineer - Evals. This is a full-time role in Palo Alto, California. posted today. applications are still in the early window, before most candidates have applied. Full responsibilities, required qualifications, and the apply link are listed in the description below.

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Job description

SpaceXAI’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.

You will own and elevate our mission-critical research platform that directly accelerates xAI’s frontier work.

The evals team creates and executes instruments for measuring model capabilities and behaviors. These instruments are used to clean datasets, provide feedback for experiments, and track growth throughout training. The evals team also diagnoses why agents fail and how to make improvements both short and long term. We manage the execution infrastructure, design data sets and grading schemes.

You will design, build, and ship delightful and bulletproof systems that engineers love to use every day. This role values a strong attention to details, first principles reasoning, and great taste.

We are open to all levels from new grads to senior engineers.

Requirements

Software engineering proficiency and 3+ years of experience actively writing code.
A track record of shipping high quality projects and a strong sense of urgency.
Exceptional product taste - you have a sharp sense for what “good” looks like in outputs, and you can translate fuzzy notions of quality, helpfulness, truthfulness, and safety into concrete, measurable criteria.
Strong attention to detail.

Bonus Points

Previously founded a startup or joined a fast-growing early-stage startup.
Familiarity with AI/ML workflows, annotation tools, or evals.
Experience creating and maintaining component libraries, design systems, or internal tools.

COMPENSATION AND BENEFITS:

$175,000 - $275,000 USD

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.

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

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Frequently Asked Questions

How do I apply for the Software Engineer - Evals 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 Software Engineer - Evals position at Xai located?

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

What does a Software Engineer - Evals 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 Software Engineer - Evals role at Xai posted?

This role was posted on July 22, 2026 (today). It's still listed as actively hiring; we re-confirm openings against the source system multiple times per day and remove closed roles.

Is the Software Engineer - Evals role at Xai entry-level?

Yes. This is an entry-level position. Strong candidates typically have 0-2 years of relevant work experience, internships, or significant project work. Read the full description for any specific qualification requirements Xai has listed.