America/Chicago
About
Work
Blog
Gallery
Mental Health LLM Evaluation
Featured work

Building AI solutions for tomorrow's challenges

I'm Nathanael, an Applied AI and Data Science professional from Saba, Netherlands Antilles, based in Nashville, TN.
I'm passionate about building AI solutions across healthcare, finance, and data science.
About – Nathanael Johnson
Mental Health LLM Evaluation

Mental Health LLM Evaluation

Evaluating Large Language Models for Mental Health Applications: A Comprehensive Study on Bias and Fairness
Read case studyView project

Latest from the blog

Nathanael Johnson
June 4, 2025
From Theory to Practice: My Journey Through the Ethical Landscape of AIAI Ethics
Nathanael Johnson
September 23, 2024
Transforming University Data: A Database Conversion JourneyData Engineering
Airline Revenue Optimization System

Airline Revenue Optimization System

Designed a predictive ML system for airline passenger no-shows to maximize overbooking revenue using cost-sensitive learning and Monte Carlo simulations
Read case studyView project
F1 AI Race Predictor

F1 AI Race Predictor

Built an end-to-end race prediction platform using historical race data, weather, driver performance, and qualifying results, achieving 68.5% accuracy
Read case studyView project
Portfolio Optimization Dashboard

Portfolio Optimization Dashboard

Designed a full-stack investment optimization system supporting strategies like Markowitz, Black-Litterman, and Risk Parity, with real-time analytics dashboards
Read case studyView project
Nashville Airbnb Data Analysis

Nashville Airbnb Data Analysis

Enhancing InsideAirbnb.com with Predictive Analytics on Nashville Listings: A Data-Driven Approach to Price and Rating Predictions
Read case studyView project
Restaurant Review Data Dive

Restaurant Review Data Dive

Uncovering Customer Satisfaction Drivers through Sentiment Analysis and Predictive Modeling of Restaurant Reviews across Multiple States
Read case studyView project
Car Sales Data Dive

Car Sales Data Dive

Predicting Car Sale Prices through Advanced Data Cleaning, Feature Engineering, and Regression Modeling
Read case studyView project
Employee Attrition Analysis

Employee Attrition Analysis

Strategic Employee Attrition Analysis and Retention Solutions Visualization using Tableau
Read case studyView project
Lyft Market Analysis

Lyft Market Analysis

Lyft Market Expansion Strategies and Optimization in Washington D.C. using Tableau visualization
Read case studyView project
Global Internet Usage Analysis

Global Internet Usage Analysis

Global Internet Usage and Search Engine Preferences Analysis with interactive Tableau visualizations
Read case studyView project
COVID-19 Clustering Analysis

COVID-19 Clustering Analysis

Comparing Spectral Clustering with K-means and KNN to determine relationships between COVID-19 transmission peaks
Read case studyView project
Bird Data Analysis

Bird Data Analysis

Exploratory data analysis and pattern recognition in bird observation datasets
Read case studyView project