Hi, I'm

GREGORY
JOSHUA

Data & BI Analyst | Data & Analytics Engineer

M.S. Business Analytics | B.S. Mathematics

I’m interested in building reliable, scalable data systems and analytics that turn complex, messy data into clear insights and better decisions. From engineering that produces governed metrics and trustworthy data products, to analytics that uncovers patterns, tests assumptions, and quantifies the drivers behind business outcomes, I enjoy working across the full data lifecycle.

PROJECTS

Scroll through a selection of projects that highlight my work.

Retail Rocket ELT Pipeline

PySpark PostgreSQL dbt Docker

Built an end-to-end ELT pipeline for large-scale retail data using PySpark and PostgreSQL, with dbt modeling and testing, a Lightdash BI layer, and Docker containerization.

GitHub  View on GitHub →

Bay Wheels Analysis

Python Parquet Tableau Data Analysis

Ingested, cleaned, and analyzed 10M+ Bay Wheels bike share trips. Built an interactive Tableau dashboard and wrote an executive summary to surface KPIs, visualize demand patterns, and make station rebalancing recommendations.

GitHub  View on GitHub →

gregoryjoshua.com

HTML5 CSS3 JavaScript Netlify

Wrote responsive HTML and CSS to create a personal website that communicates information both via content and style.

GitHub  View on GitHub →

More projects coming soon...