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Principal Researcher

Microsoft

$139,900 - $304,200
Dec 24, 2025
Redmond, WA, US
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Microsoft is looking to solve the problem of transforming the Windows experience through state-of-the-art language and multimodal models, and is seeking a Principal Researcher to design and lead the implementation of these models.

Requirements

  • Experience conducting research as part of a research program in academic or industry settings.
  • 3+ years' experience training and/or finetuning large language models, model compression, distillation to small language models.
  • 3+ years' experience with Python and deep learning libraries
  • Experience in large language/multimodal model training, finetuning and distillation.
  • Experience using dataset curation, data generation using prompting state of art LLMs and/or model alignment.
  • Experience with reinforcement learning libraries or formal methods and verification is a plus.
  • Experience in creating reusable software libraries and packages.

Responsibilities

  • Research focusing on foundation models - Designing and training language and multimodal models (and finetunes) with supervised finetuning, distillation, reinforcement learning, low-rank adaptation.
  • Research focusing on environment interaction, policy specification and verification and human intent alignment.
  • Implementation: Train, distill, and finetune language and vision models in PyTorch, DeepSpeed, AzureML stack.
  • Machine learning engineering - Build pipelines to test designs, algorithms and models.
  • Data science - Research and develop synthetic data generation strategies.
  • Proactively follow state of the art research and share latest work, write papers, attend conferences and share knowledge in the wider team.

Other

  • Doctorate in relevant field AND 3+ years related research experience
  • OR equivalent experience.
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role.
  • Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.
  • Demonstrated ability and passion for incubating new ideas, solving problems, and building working systems.