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Summary
Aim for 3–5 lines. Lead with role + years + specialty. Recruiters skim this in 4 seconds.
Experience
Senior Data Scientist
Data Scientist
Skills
Education
Template
Live Corporate · US Letter · 1 page
Sofia Reyes
Data Scientist · ML in Production
[email protected] · +1 646 555 0727 · Brooklyn, NY · sofiareyes.io · linkedin.com/in/sofiareyes · github.com/sofiareyes
Summary
Data scientist with 5 years shipping ML systems to production at consumer and marketplace companies. Specialized in NLP and recommendation. Built the personalization stack at Etsy that drives 18% of homepage purchases.
Experience
Senior Data Scientist, Etsy
Sep 2022 – Present
Brooklyn, NY
  • Built and shipped the homepage recommender that now drives 18% of purchases (+2.1% lift in conversion).
  • Replaced legacy collaborative-filtering pipeline with a two-tower embedding model on Vertex AI.
  • Co-authored an internal style guide for offline → online evaluation that's now standard across the org.
Data Scientist, Spotify
Jul 2020 – Aug 2022
New York, NY
  • Improved track-level genre tagging F1 from 0.71 → 0.86 by fine-tuning BERT on Spotify's editorial corpus.
  • Designed and ran the A/B test that validated personalized playlist covers (+4% engagement, shipped globally).
Education
Columbia University — MS Data Science 2018 – 2020
University of Texas at Austin — BS Statistics 2014 – 2018
Skills
ML: PyTorch, TensorFlow, Hugging Face Transformers, XGBoost, scikit-learn
Data & infra: Python, SQL, Spark, Airflow, BigQuery, Vertex AI, Snowflake
Experimentation: Causal inference, A/B testing, Statsig, Bayesian methods