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X, The Moonshot Factory Logo

Senior Applied ML Research Engineer, Early Stage Project

X, The Moonshot Factory

$165,000 - $238,000
Sep 23, 2025
Mountain View, CA, US
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X is looking to build AI systems that can perform previously impossible tasks or achieve unprecedented levels of performance in the legal domain, making the practice of law radically more efficient and accurate.

Requirements

  • 6+ years experience in NLP applied research and high-performance implementations of machine learning algorithms and productionization
  • Experience translating research concepts or novel techniques into robust, production-ready systems
  • Proficiency in MLOps, including model deployment, versioning and performance monitoring in production environments
  • Strong proficiency in Python and software engineering best practices (testing, designing architectures, version control, etc)
  • Achieved strong results with sophisticated model prompting, and with (at least one of) fine-tuning or applying RL to large language models
  • Significant success with building AI software and systems for specific industries, either as research publications at top PL or ML venues, or as open source artifact(s)
  • Consistent track record of delivering high quality solutions to large, complex software problems

Responsibilities

  • building AI systems that can perform previously impossible tasks or achieve unprecedented levels of performance
  • designing, implementing, and improving models achieving specific tasks
  • writing bug-free machine learning code
  • building the science behind the algorithms employed
  • Develop deep expertise with the team’s technical stack, make targeted contributions and move fast in the work of experimentation
  • translating research concepts or novel techniques into robust, production-ready systems
  • Achieved strong results with sophisticated model prompting, and with (at least one of) fine-tuning or applying RL to large language models

Other

  • Act like an owner; be fearless in diving deep, asking questions, proposing solutions, establishing consensus and then making things happen.
  • Work effectively with cross-functional teams of engineers, product managers, and domain experts
  • Provide direction and focus in areas of high ambiguity
  • Enjoy mentoring others and helping the team grow
  • Excel at building strong relationships with stakeholders at all levels