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Machine Learning Engineer, Community Notes

Xai

$180,000 - $440,000
Oct 9, 2025
Palo Alto, CA, US
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xAI's mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. The Community Notes team aims to empower people to keep each other better informed with a fully open source algorithm and data, constantly advancing the state-of-the-art in improving the quality of information on the internet.

Requirements

  • Experience developing and shipping high-impact ML solutions end-to-end: from getting your hands dirty creating training data pipelines, to developing novel model architectures, to deploying to production at scale reliably
  • Demonstrated ability to work with real-world data to extract insights, inform product roadmap and develop guiding metrics in situations that lack cut-and-dry evaluation criteria
  • Familiarity with one or more deep learning software frameworks, e.g. PyTorch
  • Enjoy working in a 0-to-1 space with no known machine learning or product solutions, and trailblazing to build novel solutions that work

Responsibilities

  • Design and build improvements to our unique machine learning algorithm that improve Community Notes’ helpfulness, accuracy, scale, speed, and manipulation resistance
  • Work in public: contribute to our open source code base, supporting external engineers working with our public data.
  • Build efficient, scalable internal production machine learning systems and infrastructure
  • Contribute to the entire product via tight cross-functional collaborations with product/eng/etc

Other

  • 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 are expected to have strong communication skills.
  • Love doing whatever work is needed to get things done, enabling rapid iteration on the product