Christopher Ortiz

Data Scientist

Christopher Ortiz


Data Scientist


(210) 885-6635

Available Work Locations: San Antonio, TX

Military Veteran

Core Technologies: Python, MySQL, Spark, Tableau, Pandas, NumPy, Matplotlib, Seaborn, SciKitLearn, Anaconda, Jupyter Notebooks, Git/GitHub

Core Competencies: Data Storytelling, Applied Statistics, Machine Learning, Natural Language Processing, Classification, Regression, Clustering, Time Series Analysis, Anomaly Detection

Hire Me Because

I’m a self-motivated servant leader and Data Scientist with six years of award-winning customer service. I’ve had the privilege to serve new hires as a trainer, mentor, and friend. Coupled with an education in finance and wealth management, I produce data-driven stories that generate discussion and empower my audience. I read the docs. Open to in-person or remote work. Fully vaccinated.

My Capstone Project: AI Learning Team

Using the knowledge states of 100K students, we created an XGBoost Machine Learning Classification model to predict whether a student will answer a question correctly. The accuracy of the model was 76%, a 47% improvement over the baseline. To build this model, we first visualized the interactions between features and scaled the data using a StandardScaler. We conducted Two-Sample Two-Tailed T-Tests, Pearson’s R Correlation, and Chi-Squared tests. After hypothesis testing, we determined that questions with explanations and pictures were drivers of whether students would answer a question correctly. Lastly, we crafted a set of recommendations for the education company that provided the dataset.

“With technology, I am most passionate about ripping the complexity away from data to provide direct answers with actionable recommendations.