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Meta Platforms · Paris, France

# Postdoctoral Researcher (PhD) - FAIR - Core Learning

Paris, France Research & Science 

Listed on Meta Platforms’s official careers site. Listed as of October 18, 2026. Check that it is still open and apply there.
[Apply on Meta Platforms’s careers site →](https://www.metacareers.com/jobs/1409968454314471/)

[OpenNash Jobs](https://jobs.opennash.com/) / [Meta Platforms](https://jobs.opennash.com/companies/meta-platforms/) / Postdoctoral Researcher (PhD) - FAIR - Core Learning

## Job description

Meta's Fundamental AI Research (FAIR) organization is seeking a postdoctoral researcher to drive advancements in generative models, with a particular focus on Reinforcement Learning in large language models (LLMs) and/or formal math (Lean).

## Responsibilities

Innovate, lead, and execute pioneering research to push the state-of-the-art in generative models and LLM performance Systematically perform independent research, quickly adapting to new developments in the field Directly contribute to the experimental process, including designing details, implementing reusable code, running evaluations, and organizing results
- Contribute to publications, open-sourcing initiatives, and mentor other team members
- Ensure effective cross-functional collaboration

## Qualifications

Currently possess or be pursuing a PhD in Computer Science, Mathematics, or a similar quantitative discipline
- Demonstrated experience with training, fine-tuning, and experimentation on foundation models beyond black-box usage
- Must be able to obtain and maintain work authorization in the country of employment Expertise in RL for LLMs and/or Lean (formal mathematics) Holds first-author publications at peer-reviewed AI conferences (e.g., NeurIPS, ICML, ICLR)

## At a glance
- Posted by the employer: Not stated
- First seen by OpenNash: Aug 20, 2026
- Last checked: Oct 18, 2026
- Listed for: 59 days
- Location: Paris, France[Apply on Meta Platforms’s careers site →](https://www.metacareers.com/jobs/1409968454314471/)

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