Kenji Watanabe
Data Scientist
kenji.watanabe@email.com • +1 647 555 0128 • Toronto, ON • linkedin.com/in/kenjiwatanabe • github.com/kenjiw
Professional Summary
Data scientist with 4 years of experience building machine learning models for fintech. Takes models from exploration to production in Python, scikit-learn and PyTorch, and explains results clearly to non-technical teams. MSc in Statistics.
Education
University of Toronto
Toronto
MSc, Statistics
2018 – 2020
University of Waterloo
Waterloo
BMath, Statistics
2014 – 2018
Work Experience
Maplepay
2022 – Present
Data Scientist
- Built a fraud detection model with XGBoost that catches 23% more fraud at the same false-positive rate, saving $3M a year.
- Deployed models as APIs on AWS SageMaker with monitoring for data drift.
- Designed the A/B testing framework the product team now uses for every launch.
Northbank Analytics
2020 – 2022
Junior Data Scientist
- Built a customer churn model that let the retention team target the 10% most at-risk accounts; churn fell 8%.
- Created NLP topic models on 500,000 support tickets to find the top causes of complaints.
- Wrote reusable feature pipelines in PySpark that cut model training prep from days to hours.
Skills
Machine learning: Regression, classification, gradient boosting (XGBoost, LightGBM), NLP, time series, deep learning
Tools: Python, SQL, pandas, scikit-learn, PyTorch, PySpark, MLflow
Platforms: AWS SageMaker, Databricks, Snowflake, Docker, Git