Hi, I'm Sebastian Marrero - I’m passionate about analytics and uncovering meaningful insights from data. I enjoy using Python and SQL. Check out my projects and other interests below!

Precision-Recall curve for weighted LightGBM and XGBoost models after tuning scale_pos_weight parameter.

Credit Card Fraud Detection

Modeled rare fraud cases using XGBoost, LightGBM, and Logistic Regression with class imbalance strategies and PR AUC benchmarking.

NYC Airbnb Market Analysis

Explored market pricing, availability trends, and revenue dynamics across 40,000+ NYC Airbnb listings using SQL and Python.

Average Price by Room Type and Neighbourhood

Average nightly prices by room type and neighborhood highlight spatial pricing disparities across NYC.

Unicorn Start-Up SQL Analysis

Analyzed billion-dollar startups using MySQL and Tableau to explore ROI, industry trends, and investor performance globally.

ROI ratio chart highlighting capital efficiency among top unicorns.

Logistic Regression Coefficients - Variable Impact

Regression coefficient visualization outlines directionality and magnitude of impact that each variable has on customer churn incidence.

SaaS Customer Churn Prediction

Predicted churn using logistic regression and Random Forest Classification Models. Engineered features from customer behavior, tenure, and subscription tier.

Writing & Publications

I've published economic policy articles as a contributor to the Vanderbilt Business Review:

I also have an interest in philosophy and critical theory, particularly how structural power dynamics shape economic and social systems. Below is a midterm essay that examines capitalism’s relationship with racism through the lens of contemporary philosopher Nancy Fraser’s thought.