xAI

Lead Engineer, AI Infrastructure (C++, C)

xAI
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9 hours ago
Palo Alto, CA, USA or Seattle, WA, USAStaff+
H1B sponsor

Base Salary

$220k - $357k/yr

Responsibilities

  • Develop reliable, performant, and maintainable software for training Grok models in large-scale compute clusters.
  • Provide technical direction for future training architectures and hardware designs.
  • Collaborate with model, kernel, network, hardware design, platform, and site operations engineers.
  • Develop prototypes to validate design concepts and quantify technical constraints.
  • Lead team planning, stakeholder coordination, milestone development, and execution.

Requirements

  • Bachelor’s degree in computer science, engineering, mathematics, or another technical discipline.
  • Hands-on systems programming experience in C or C++.
  • At least 3 years of software engineering experience or 1 year of C/C++ experience at SpaceX.
  • Experience developing, debugging, and deploying software used in real-world applications or projects.
  • Knowledge of NVL72 GB300 racks, computer architecture, networking, mathematics, and physics.
  • Strong skills in modeling, debugging, performance optimization, and unit testing.
  • Creative problem-solving, analytical skills, and strong engineering fundamentals.

Benefits

  • Equity and comprehensive medical, vision, and dental coverage.
  • Access to a 401(k) retirement plan, short- and long-term disability insurance, life insurance, discounts, and other perks.

Tech Stack

xAI

About xAI

1,001-5,000 employees

Understand the Universe. We are a team of AI technologists and business leaders on a mission to build AI systems that can help humanity understand the world better. https://x.ai/careers

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