Senior Data Scientist

Senior Data Scientist — Vanguard Retail Systems

Seattle, WA | January 2021 – Present

• Architected 4 production recommendation models using PyTorch and Spark, boosting monthly active user click-through rates by 22% and generating $1.8M in extra sales.
• Deployed 8 deep learning classifiers on AWS SageMaker, decreasing model training time by 34% and cutting server hosting costs by 15% through infrastructure optimization.
• Designed 12 multi-variable A/B experiments targeting page checkout flows, leading to a 6% increase in conversion rates for over 2,000,000 active customer accounts.
• Supervised 3 junior data engineers to automate feature extraction pipelines using Airflow, reducing manual pipeline intervention by 45% and saving 12 developer hours weekly.

Data Scientist — Apex Digital Solutions

Portland, OR | June 2016 – December 2020

• Built 6 predictive churn models using Scikit-Learn and SQL, helping customer success teams identify at-risk users and reduce quarterly account churn by 18%.
• Engineered 14 customer segmentation algorithms via K-Means clustering, improving marketing campaign return on investment by 24% for a portfolio of 45 major brands.
• Automated 5 automated data ingestion scripts using Python and PostgreSQL, eliminating 28 hours of weekly manual reporting tasks for the product intelligence division.
• Implemented NLP classification models on 300,000 customer reviews using TensorFlow, increasing sentiment tagging precision by 15% and streamlining product feedback.

Python, SQL, R, TensorFlow, PyTorch, Scikit-Learn, Apache Spark, AWS SageMaker, Apache Airflow, Tableau, PostgreSQL, Docker, Kubernetes, A/B Testing, Machine Learning, Deep Learning, Natural Language Processing, Statistical Modeling, Predictive Analysis

Deep Learning Image Classifier

Role: Lead Data Scientist

Tools: Python, PyTorch, Docker, AWS EC2

Developed an automated product tagging engine that processes 50,000 images daily, achieving 96% accuracy and reducing manual review workloads by 70%.

Enterprise A/B Testing Platform

Role: Senior Data Scientist

Tools: Python, SQL, Statsmodels, Tableau

Built a self-serve statistics platform that analyzed 40 concurrent experiments, reducing dashboard load times by 48% and cut experiment evaluation cycles by 5 days.

• AWS Certified Machine Learning – Specialty (2023)
• TensorFlow Developer Certificate (2020)

• Languages: English (Native), French (Conversational)
• Volunteer Work: Math and programming tutor for local STEM high school students (2021-present)
• Availability: 2 weeks notice