xAI

xAI

Posted via Greenhouse

Machine Learning Engineer - Ads

Posted Aug 5, 2026

Role at a glance

Salary
Not Disclosed
Location
Palo Alto, California, United States
Work arrangement
On-site
Experience
3+ years of industry experience working on large-scale, high-throughput AI-powered advertising products.

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Qualifications

3+ years of industry experience working on large-scale, high-throughput AI-powered advertising products.

Required

  • 3+ years of industry experience working on large-scale, high-throughput AI-powered advertising products.

About the role

Original posting provided by xAI

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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.

ABOUT THE ROLE:

We’re looking for exceptional engineers who want to join us on a new project to integrate Grok into all parts of our Ads Platform. We’re looking for individuals who have built exceptional advertising products and systems at a massive scale across bidding, auction, marketplace, ranking, prediction, and product. We’re bringing SpaceXAI's technology stack to Ads Platform and using it to transform our advertising stack.

RESPONSIBILITIES:

  • Leverage the latest Grok models to power all stages of our advertising stack, from candidate selection to ranking, auction, campaign optimization, creative generation, and advertiser experience.
  • Own and operate systems and products, driving the majority of revenue.

BASIC QUALIFICATIONS:

  • 3+ years of industry experience working on large-scale, high-throughput AI-powered advertising products.

COMPENSATION AND BENEFITS:

$180,000 - $440,000 USD

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

xAI

About the company

xAI

Large Enterprise

xAI is a cutting-edge technology company focused on developing advanced artificial intelligence solutions to enhance human capabilities and optimize decision-making processes. Founded by a team of leading experts in AI and machine learning, xAI aims to address complex challenges across various industries, including healthcare, finance, and transportation. By prioritizing ethical AI development, the company is committed to creating innovative tools that empower organizations to harness the full potential of artificial intelligence while ensuring transparency and accountability.