Full-Time

Hardcore Engineer

Pre-training Infrastructure

Confirmed live in the last 24 hours

xAI

xAI

1,001-5,000 employees

AI tools for research and information retrieval

Compensation Overview

$180k - $440k/yr

Senior, Expert

Palo Alto, CA, USA + 1 more

More locations: San Francisco, CA, USA

Candidates are expected to be located near the Bay Area or open to relocation.

Category
Applied Machine Learning
AI & Machine Learning
Required Skills
Rust
Python
Operating Systems
C/C++
Requirements
  • Must be proficient in Python, Rust, and C++
  • Strong communication skills
  • Experience in configuring and troubleshooting operating systems for maximum performance
  • Experience in building scalable training frameworks for AI models in HPC clusters
  • Familiarity with distributed training strategies such as FSDP, Megatron, and pipeline parallelism
  • Knowledge of NCCL or custom communication libraries for performant communication collectives
Responsibilities
  • Design, build, and implement large-scale distributed training systems
  • Profile, debug, and optimize multi-host GPU utilization
  • Engage in hardware/software/algorithm co-design
  • Maintain and innovate on the codebase
  • Build tools to boost the productivity of the team
Desired Qualifications
  • Experience with scalable orchestration frameworks and tools
  • Familiarity with machine learning compilers and runtime such as XLA, MLIR, and Triton

x.ai develops AI tools to assist in research and information retrieval, with its main product being Grok. Grok is designed to answer a variety of questions, including unconventional ones, and provides real-time knowledge. It serves researchers, academics, and professionals by streamlining their research processes, allowing for quick access to relevant information and data analysis. Unlike other AI systems, Grok is capable of handling more nuanced inquiries, making it a versatile tool. The company operates on a subscription model, offering Grok as a research assistant, and aims to continuously improve the tool based on user feedback. The goal of x.ai is to empower users with reliable information and foster innovation in their fields.

Company Size

1,001-5,000

Company Stage

Series C

Total Funding

$12.1B

Headquarters

Burlingame, California

Founded

2023

Simplify Jobs

Simplify's Take

What believers are saying

  • Acquisition of Hotshot expands xAI's multimedia content creation capabilities.
  • Collaboration with NVIDIA and Microsoft boosts AI processing power.
  • Smart cities initiative positions xAI as a leader in urban innovation.

What critics are saying

  • Integration challenges with X platform may hinder data unification.
  • User backlash over data privacy concerns from X merger.
  • Increased competition in AI video generation from established players.

What makes xAI unique

  • Grok answers unconventional questions, unlike typical AI systems.
  • xAI's platform focuses on scientific discovery and universe exploration.
  • Grok evolves with user feedback, enhancing its research capabilities.

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Benefits

Health Insurance

Remote Work Options

Growth & Insights and Company News

Headcount

6 month growth

-4%

1 year growth

1%

2 year growth

39%
Your News
Mar 29th, 2025
Elon Musk's xAI Acquires X in All-Stock Deal, Merging AI Power with Social Media Reach

Musk confirms that xAI has acquired X to unify data, talent, and distribution as part of a long-term AI strategy.

FX Leaders
Mar 29th, 2025
Elon Musk: World's Richest Man Merge X with xAI

The post claimed that xAI, the developers of Grok, "acquired X in an all-stock deal. "

Reuters
Mar 29th, 2025
Musk's social media firm X bought by his AI company, valued at $33 billion

Elon Musk's xAI has acquired X in a deal that values the social media platform at $33 billion and allows the value of his artificial intelligence firm to be shared with his co-investors in the company formerly known as Twitter.

The Right Reasons
Mar 28th, 2025
Musk announces he sold social media company X to his AI company for $33 billion

Tesla CEO Elon Musk announced on Friday that he sold his social media company X to his artificial intelligence company xAI for $33 billion, which is lower than he paid for it.