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Meta Logo Meta · IT - Software Development

Research Engineer, Language - Personalization

United States, Menlo Park 257000.00 USD / Year · Job Posted February 19, 2026
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Job Description

Meta is seeking research engineers to help us build the solutions for Personalization of Meta AI. We're looking for researchers with LLM post training LLM expertise to join us on working with improving the personalization of LLM responses. Our team contributes to post training recipe, evaluations and tool calling for personalizing MetaAI’s responses. We are tackling complex challenges from synthetic data curation, developing reinforcement learning environments and recipes, user profiling at Meta’s scale and frontier paradigms that redefine what is possible

Job Responsibility

  • Collaborate with cross-functional teams to develop and improve personalization in Meta’s frontier foundation models
  • Directly contribute to experiments, including designing experimental details, developing reusable code, running evaluations, and organizing results
  • Prioritize research that can be applied to Meta's product development
  • Lead complex technical projects end-to-end

Requirements

  • Bachelor's degree in Computer Science, Computer Engineering, relevant technical field, or equivalent practical experience
  • Experience in Generative AI models and building LLM technologies particularly post training
  • Experience solving complex problems and comparing alternative solutions, tradeoffs, and different perspectives to determine a path forward
  • Programming experience in Python and hands-on experience with frameworks like Pytorch, Spark
  • Must obtain work authorization in the country of employment at the time of hire, and maintain ongoing work authorization during employment
  • Proven experience of proactively identifying, scoping and implementing innovative solutions

Nice to have

  • Hands on experience in Personalization with LLMs particularly on designing agentic systems, RAG and Reinforcement learning based post training techniques
  • First author publications at peer-reviewed AI conferences (e.g., NeurIPS, CVPR, ICML, ICLR, ICCV, and ACL)
  • A PhD in AI, computer science, data science, or related technical fields

What we offer

  • bonus
  • equity
  • benefits
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