Principal Applied Scientist - Ads Ranking & Retrieval

Job description

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 keep solutions state-of-the-art. - Collaborate with research and engineering teams. Bachelor's Degree in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 6+ years related experience (e.g., statistics, predictive analytics, research). OR Master's Degree in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 4+ years related experience (e.g., statistics, predictive analytics, research).

OR Doctorate in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 3+ years related experience (e.g., statistics, predictive analytics, research). These requirements include but are not limited to the following specialized security screenings: Master's Degree in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 6+ years related experience (e.g., statistics, predictive analytics, research).

OR Doctorate in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 5+ years related experience (e.g., statistics, predictive analytics, research). OR equivalent experience. Expertise in training and inference optimization. Experience designing and scaling recommendation systems with massive query/item spaces and multi-stage ranking pipelines.