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Principal Research Engineer - Generative AI - AI Frontiers

Microsoft

$139,900 - $304,200
Aug 27, 2025
Redmond, WA, USA
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Advancing Artificial Intelligence (AI) capabilities in areas including modeling, algorithms, reasoning, and agentic AI, and evolving pre-training, mid-training, and post-training codebases for models like Phi.

Requirements

  • 1+ year(s) experiencedevelopingwithPython andPytorch/JAX.
  • Familiarity witharchitecture and optimizations for large language models.
  • Hands-on workin debugging and profilingPytorchdistributed code.
  • Basic understanding ofworkingofCUDAkernels.
  • Familiarity withpre-training, mid-training and/or post-training pipelines forlanguageand/or multimodal models.
  • Foundational understanding ofreinforcement learning andkeychallenges in the field.
  • Experience withverl, Ray, Megatronand/orvLLMis a significant plus.

Responsibilities

  • help develop novel ideas in bleeding edge reinforcement learning research
  • help evolve our pre-training, mid-training, and post-training codebases that gave birth to famous models such as Phi establishing many new records
  • collaborate with researchers and engineers across many disciplines to help advance the state of the art in reasoning and agentic AI
  • design, develop, execute, and implement technology research projects in collaboration with other researchers, engineers, and product groups
  • play a crucial role in developing, improving, and exploring the capabilities of Large Language Models (LLMs), reasoning and agentic AI

Other

  • Bachelors in Computer Scienceor relevant field AND6+ years relatedexperience
  • Master's Degree inComputer Scienceor related field AND4+ years relatedexperience
  • Doctorate inComputer Science or related fieldAND 3+ years related experience
  • equivalent experience.
  • Embody our culture and values.