• Lead cross-functional stakeholder teams; delegate tasks effectively driving projects from ideation to successful launch. • Develop and deploy ARIMA and SARIMA models for real-time, client specific time series forecasting with MAPEs less than 20%. • Engineer XGBoost regression models to uncover consumer conversion probabilities based on promotional offers. • Establish and oversee the creation of three APIs and a data warehouse to support the launch of CJ’s new Influencer line of business. • Collaborate with engineering to migrate CJ’s data system to a new server using GitLab, CI/CD pipelines, and YAML.

CJ Affiliate | Oct 2018 - Apr 2022

Data Scientist

• Design and optimize workflows in Databricks to conduct complex data analysis using SQL, Spark tools, and Python. • Build dynamic Tableau dashboards to deliver key insights for 4,500+ clients, assisting international stakeholders in strategic planning. • Deliver frequent company-wide demonstrations and conference lectures on CJ’s tools, tailoring content to the audience.

Monarch Casino Black Hawk | Jan 2018 - May 2018

Database Analyst

• Developed regression models to forecast player engagement and future revenue using demographic and slot machine data, enabling Monarch to better strategize their marketing promotion goals. • Created 12 SQL scripts that tracked slot machine usage, guest behavior, and the five most popular slot machines across seven designated time periods. • Designed dashboards using Power BI to enhance the results from the 12 SQL scripts and shared the insights with upper management.

My Education

Take a look at my formal education

Master of Science - MS, Data AnalyticsUniversity of Colorado Boulder | 2018

Bachelor’s Degree, Business Marketing, Operations and Information Management Certificate, Concen...University of Colorado Boulder | 2017

About Me

Highly tenacious and process-oriented data analyst with in-depth knowledge of statistical modeling, database frameworks, and data visualization. A people-person at heart, collaboration is where the action happens.

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John Madden

Senior Data Scientist

CJ | Chicago, IL

ARIMA Models in Python

Intermediate Deep Learning with PyTorch

Introduction to LLMs in Python

ARIMA Models in Python

Data explorer, embarking on a mission to uncover actionable insights.

My Work

Project: Predictive Modeling for Agriculture

Project: Analyzing Car Reviews with LLMs

Project: Analyzing Crime in Los Angeles

Project: Hypothesis Testing in Healthcare

Project: Predictive Modeling for Agriculture

DataCamp Course Completion

Courses