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Jacob Miller

@jacobmiller2

Data Scientist at Meta improving ads recommendations and ranking with machine learning, experimentation, and causal measurement.

United States
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At Meta, I work on Ads Recommendation & Ranking initiatives to improve ad relevance, personalization, and ranking quality. I use deep learning, embeddings, and behavioral signals to strengthen user-ad matching and candidate quality.

I also shape experimentation and causal measurement across ads initiatives, using A/B testing, power analysis, and treatment-effect estimation to inform product and monetization decisions.

At Meta, I’ve applied LLMs, RAG, semantic search, and vector retrieval to advertising workflows, and developed evaluation frameworks for retrieval relevance, groundedness, safety, and model drift.

Previously, at AllState, I developed customer loss and retention models and created a production scoring pipeline with an expected annual savings impact of approximately $1.5 million. I also contributed to a modeling framework for actuaries working with distributed data.

Experience

Work history, roles, and key accomplishments

Meta logoME
Current

Data Scientist

Aug 2018 - Present (8 years 1 month)

Spearheaded Meta Ads Recommendation & Ranking initiatives, applying Python, SQL, PyTorch, Spark, embeddings, feature engineering, candidate generation, and learning-to-rank to improve ad relevance, personalization, and ranking quality at scale. Owned experimentation and causal measurement strategy across ads initiatives through A/B testing, causal inference, power analysis, incrementality, treatme

AL

Senior Data Scientist

AllState

Oct 2017 - Jul 2018 (9 months)

Developed customer loss and retention models using H2O, Python, R, and Spark/PySpark across approximately 250 GB datasets, identifying behavioral and policy-level signals associated with profitability and customer retention. Created a production model scoring pipeline to identify profitable customers at risk of leaving, with an expected impact of approximately $1.5 million in annual savings.

Education

Degrees, certifications, and relevant coursework

University of California, Davis logoUD

University of California, Davis

Master of Science, Mathematics

2011 - 2013

Pursued a Master of Science in Mathematics at the University of California, Davis from 2011 to 2013.

University of California, San Diego logoUD

University of California, San Diego

Bachelor of Science, Mathematics

2007 - 2011

Earned a Bachelor of Science in Mathematics from the University of California, San Diego from 2007 to 2011.

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