Louis Bailey
@louisbailey
Senior data scientist building predictive modeling pipelines, deploying production ML, and optimizing cost with mission-driven analytics.
What I'm looking for
I’m a versatile data scientist specializing in predictive modeling, model deployment, and mission-driven analytics, with more than 10 years of experience across startup and enterprise environments. I’ve worked in high-growth product teams and in regulated contexts where reliability, reproducibility, and operational discipline matter.
I’m hands-on across the full lifecycle: exploratory data analysis, feature engineering, and statistical testing, then operationalizing models for real-world usage. I translate customer feedback into sprint-based model iteration cycles, and I communicate impact through Predictive Model Performance reporting and ROM Estimate Reports.
In recent work, I architected predictive modeling pipelines and improved forecast accuracy by 24% across client programs. I deployed production endpoints with AWS SageMaker and containerized services, cutting model deployment time by 45% and achieving 99% SLA adherence, while also reducing compute spend by 27% via CloudWatch monitoring and cost/resource reporting.
I also bring deep geospatial analytics capability—using tools like GeoPandas and PostGIS to enhance location-based predictions—and I’ve delivered measurable gains such as 22% higher spatial recall. From reducing churn with CLTV modeling to strengthening pipeline uptime and lowering error rates in ETL, I focus on building models and workflows that perform in production, not just in notebooks.
Experience
Work history, roles, and key accomplishments
Architected predictive modeling pipelines in Python to forecast operational metrics, improving forecast accuracy by 24% and reducing deployment time by 45%. Owned model performance and cost reporting, including ROM Estimate Reports and Predictive Model Performance Reports.
Lead Data Scientist
Rover
Mar 2020 - May 2024 (4 years 2 months)
Built end-to-end ML workflows on AWS using SageMaker, Docker, and Terraform to serve 1M+ daily events, reducing inference latency by 35%. Improved matching and analytics performance using geospatial feature engineering, model validation/statistical testing, and streaming ETL.
Designed churn and CLTV statistical models in R/Python, reducing annualized churn by 28% for targeted cohorts. Operationalized models with Airflow and Docker and improved calibration and bias assessment using stratified sampling and fairness metrics.
Data Analyst
The Home Spot
Feb 2016 - Mar 2018 (2 years 1 month)
Created ETL pipelines to ingest POS and inventory data, improving data availability from daily to hourly for near-real-time insights. Automated nightly loads and improved data quality to reduce downstream errors by 48%.
Education
Degrees, certifications, and relevant coursework
The University of Tokyo
Bachelor of Science, Computer Science
2011 - 2015
Earned a Bachelor of Science in Computer Science at The University of Tokyo from 2011 to 2015.
Tech stack
Software and tools used professionally
Amazon Redshift
Apache Spark
Superset
D3.js
Bokeh
ggplot2
GitLab
Kubernetes
Jenkins
CircleCI
GitLab CI
Jupyter
NumPy
Pandas
PostGIS
Sqoop
MySQL
PostgreSQL
MongoDB
SQLite
Hadoop
Databricks
Redis
Terraform
Jira
Java
JSON
Julia
MATLAB
Azure Machine Learning
TensorFlow
PyTorch
MLflow
scikit-learn
H2O
Mapbox
Kafka
Grafana
Prometheus
SQLAlchemy
Airflow
SQL
XGBoost
SciPy
LightGBM
CatBoost
Monte Carlo
Delta Lake
Bash
Beam
Causal
Seaborn
Availability
Location
Authorized to work in
Job categories
Skills
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