Hardcore Engineer - Reasoning Training

AI overview

Design and optimize large-scale distributed reinforcement learning systems, collaborating closely with research teams to drive innovation and performance.

About xAI

xAI’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 engineers and researchers are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.

About the Role

xAI is seeking experienced software engineers to design, implement, and optimize systems for large-scale distributed reinforcement learning. These systems are rapidly evolving and sit at the intersection of nearly all of our research and product teams.

Focus

  • Design and implement state-of-the-art distributed RL systems
  • Profile, debug, and optimize system performance
  • Software and algorithm co-design with researchers

Ideal Experiences

  • Experience building, debugging, and optimizing distributed training systems
  • Experience with distributed reinforcement learning, LLM inference
  • Experience with high-performance, large-scale distributed systems
  • Proficiency with Python, async/concurrent programming, JAX, Rust

Tech Stack

  • Python / Rust
  • JAX, PyTorch, XLA
  • CUDA, NCCL


Location

The role is based in the Bay Area [San Francisco and Palo Alto]. Candidates are expected to be located near the Bay Area or open to relocation.

Interview 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:

  1. Coding assessment in a language of your choice.
  2. Systems hands-on: Demonstrate practical skills in a live problem-solving session.
  3. Project deep-dive: Present your past exceptional work to a small audience.
  4. Meet and greet with the wider team.

Our goal is to finish the main process within one week. All interviews will be conducted via Google Meet.

Benefits

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.

Annual Salary Range

$180,000 - $440,000 USD

xAI is an equal opportunity employer.

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x.ai is a technology company founded in 2014 that specializes in developing artificial intelligence personal assistants. Their flagship product is a personal assistant that efficiently schedules meetings for users. With a focus on sustainable business ...

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Salary
$180,000 – $440,000 per year
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