Research Scientist, AI, Formal and informal Reasoning

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  • Meta
  • Paris, IDF
  • Full-Time
  • 1 week ago
Published
May 11, 2026
Location
Paris, France
Category
Job Type

Research Scientist, AI, Formal and informal Reasoning: our view in 3 lines...

  • The Role: An advanced AI research position to lead and execute research on reasoning in large language models with emphasis on formal and informal mathematical reasoning.
  • The Person: Lead and perform experiments to advance reasoning in LLMs by designing experiments, implementing reusable code, running evaluations, contributing publications and mentoring team members.
  • Requirements: Holds a PhD, experience training and evaluating large models, first-author publications at NeurIPS/ICML/ICLR, experience with reinforcement learning codebases and familiarity with pytorch and VERL and familiarity with Lean 4 is preferred.

Job Description

Meta is seeking a Research Scientist to join its Fundamental AI Research (FAIR) organization, focused on making significant advances in LLMs reasoning, using reinforcement learning, synthetic data generation and advanced scaffolding/agentic techniques, partially with a focus on formal and informal maths. You will have the opportunity to work with a broad and highly interdisciplinary team of scientists, engineers, and cross-functional partners, and will have access to cutting edge technology, important resources, and research facilities.

Responsibilities

  • Lead, collaborate, and execute on research that pushes forward the state of the art in reasoning research, with an initial focus on formal and informal mathematical reasoning
  • Work towards long-term high-stakes research goals, while identifying intermediate milestones
  • Directly contribute to experiments, including designing experimental details, implement reusable code, running evaluations, and organizing results
  • Contribute to publications and open-sourcing efforts
  • Mentor other team members. Play a significant role in healthy cross-functional collaboration
Minimum Qualifications

  • Holds a PhD in the field of Computer Science, Mathematics, or similar quantitative field
  • Experience training and evaluating large models on State-of-the-Art codebases and developing new architectures, losses and training recipes
  • First-author publications at peer-reviewed AI conferences (e.g. NeurIPS, ICML, ICLR)
  • Experience in training, fine-tuning, and/or experimenting with foundation models beyond black-box use
  • Experience working with SOTA Reinforcement Learning codebases and familiarity with one or more Machine Learning frameworks (e.g. pytorch, VERL, …)
  • Must obtain work authorization in the country of employment at the time of hire, and maintain ongoing work authorization during employment
Preferred Qualifications

  • Familiarity with the Lean 4 language and ecosystem and mathematical expertise
  • Experience with communicating complex research for public audiences of peers
Key Skills
? Key Skills in dark blue have been inferred based on similar industry roles
Reinforcement Learning Large Language Models Model Fine-tuning Experimental Design Scientific Programming Machine Learning Research Sparse Mathematics/formal Methods Machine Learning Pytorch Lean

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