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Principal Applied Scientist - Ads Ranking & Retrieval

Microsoft· Applied Sciences
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Bangalorefull-timePosted 2mo ago

About the role

Principal Applied Scientist focused on advancing research and production systems across ad retrieval, ranking, matching, and generation. Drive novel ML/AI approaches, leverage LLMs/SLMs/LRMs at web scale, and translate research into measurable business impact within Microsoft Ads.

Responsibilities

  • Advance research and development across retrieval, ranking, matching, and generative models.
  • Leverage and improve SLMs/LLMs/LRMs; train, fine-tune, and align models and productionize them.
  • Evolve the Ads ranking platform toward better usability, reliability, scalability, efficiency, and architectural coherence.
  • Provide technical leadership on projects: set direction, coach a distributed team, and influence cross-org strategy.
  • Follow research trends in AI to guide the group and keep solutions state-of-the-art.
  • Collaborate with research and engineering teams.

Qualifications

  • Bachelor's Degree in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 6+ years related experience (statistics, predictive analytics, research) OR Master's Degree in same fields AND 4+ years related experience OR Doctorate in same fields AND 3+ years related experience OR equivalent experience
  • Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.

Skills

Required:Machine learning for retrieval/ranking/matching/generationLLMs/SLMs/LRMs
Nice to have:Productionizing ML models
Last updated Aug 20, 2026. Interested? Apply on the company site.

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