Hardcore Engineer – Multimodal Infrastructure

Application ends: October 1, 2026
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Job Description

Job Detail
  • Design, build, and implement large-scale distributed training systems
  • Profiling, debugging, and optimizing GPU utilization for multimodal model training and inference
  • Building scalable infrastructure for multimodal data management and crawling
  • Hardware / Software / Algorithm co-design
  • Ideal Experiences Strong engineering skills with passion to improve different aspects of data and model
  • Has worked on one or more modalities other than text for model training/serving optimization
  • Keeping up with state-of-the-art techniques for preparing multimodal training data
  • Location The role is based in the Bay Area [Palo Alto and San Francisco]
  • Candidates are expected to be located near the Bay Area or open to relocation
  • Tech Stack Python
  • Jax / PyTorch
  • Spark / Ray
  • RustInterview 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: One-on-one engineering discussion & coding interviews (three meetings total)
  • Project deep-dive: Present your past exceptional work and your vision with xAI to a small audience
  • Every application is reviewed by a member of our technical team
  • All interviews will be conducted via Google Meet
  • Annual Salary Range $180,000 – $440,000 USDBenefits 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
  • xAI is an equal opportunity employer