AI Tooling Engineer, SpaceXAI
Model Performance & Evals
$180-440k
More information about location
Building artificial intelligence
Job no longer available
Building artificial intelligence
1001+ employees
Job no longer available
$180-440k
More information about location
1001+ employees
Company mission
To build AI systems that can help humanity understand the world better.
Role
Who you are
- This organization is for individuals who appreciate challenging themselves and thrive on curiosity
- Work ethic and strong prioritization skills are important
- All engineers and researchers are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates
- Shipped ML-adjacent tools or workflows in startups—or built something epic as a founder
- Wrestled with evals, data pipelines, or model optimization and came out on top
- Full-stack or systems chops—enough to bridge research and production
What the job involves
- 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
- The Starfleet team builds the systems that power xAI’s next leap—self-driven AI that thinks, acts, and learns
- We’re small, cross-functional, and obsessed with tools that supercharge our models and agents
- Build tools to benchmark, evaluate, and boost our models’ reasoning and performance
- Design pipelines that streamline agent testing and iteration—think evals at scale
- Collaborate with researchers to turn insights into systems that ship fast
- Leverage GPU access to prototype and scale bleeding-edge solutions
- Innovate ideas that bring us closer to AI that truly understands the universe
- Tech Stack: Typescript, Python, Rust, React, Express, PostgreSQL
Application 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
- Front end technical interview, in React/Typescript
- Systems hands-on: Demonstrate practical skills in a live problem-solving session
- 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
Our take
SpaceXAI, formerly XAI, is Elon Musk's venture into the world of artificial intelligence, and like all things Musk, it's going big. It's setting out to build AI that helps humanity understand the universe, and it's starting with Grok, its conversational AI chatbot already integrated into X (formerly Twitter). With access to real-time data and a powerful ecosystem of Musk-led companies, SpaceXAI is certainly pushing towards artificial general intelligence at serious scale.
Like all bold ventures, SpaceXAI has faced its share of controversy, from questions about regulation to the overlap across Musk's businesses (most recently, XAI became a subsidiary of the Musk-owned SpaceX). But fans are still seeing the bigger picture: an interconnected tech ecosystem where AI, social media, and space exploration feed into one another.
The company made headlines in 2024 with its massive "Colossus" supercomputer project, powered by tens of thousands of Nvidia GPUs. While the data center's temporary power setup has faced environmental scrutiny, the scale of ambition is certainly undeniable. From launching tap-to-pay features on X to building one of the most powerful AI training systems on Earth, xAI is moving fast.
Steph
Company Specialist at Welcome to the Jungle
Company
Funding (last 2 of 5 rounds)
Jan 2026
$20bn
SERIES E
Jul 2025
$5bn
GROWTH EQUITY VC
Total funding: $37.1bn
Company benefits
- Health and wellness: Comprehensive health insurance including medical, dental, vision, and disability coverage
- Life and family: Life and AD&D insurance and fertility benefits to ensure our team’s well-being and peace of mind
- Flexible vacation: We work hard but avoid burn out. Take time off when you need it
- Visa sponsorship: We support international talent with visa sponsorship to join our team
- 401(k) plan: Retirement savings plan to secure your financial future
Company HQ
Palo Alto, CA
Leadership
Elon Musk
(Founder)Founder, Chairman, CEO, and CTO of SpaceX. CEO and Product Architect of Tesla. Chairman and CTO of X Corp, founder of the Boring Company, co-founder of Neuralink and OpenAI, and president of the Musk Foundation.
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