Juan Nadal
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All (5)
BI (1)
C# (1)
Data Engineering (1)
Data Integrity (1)
ETL (1)
Federal (2)
Finance (1)
JavaScript (1)
Plotly (1)
Policy Analysis (1)
PostgreSQL (1)
Public Data (1)
Python (3)
Serverless (1)
Shiny (1)
SQL (1)
Visualization (2)
Workforce Analytics (1)

Projects

Project examples of data engineering, machine learning, and the software I build to make data usable.

Mortgage Calculator & Visualizer
Python
Visualization
Finance
Shiny

Interactive amortization tool explore how extra monthly payments change the payoff date, total interest, and the crossover point where principal payments overtake interest.

May 30, 2026

YouTube Tracker An Hourly Time-Series Data Pipeline
Python
SQL
PostgreSQL
Data Engineering
Serverless

A serverless data pipeline that crawls YouTube channel and video stats every hour into a PostgreSQL time-series, then answers questions a single scrape never could like…

May 1, 2026

Public Data Visualization Studies
Python
Visualization
Public Data
Policy Analysis

Five visualizations on environmental compliance, public health surveillance, regulatory effectiveness, occupational safety, and disparity analysis, built from BLS, CDPH, and…

Dec 10, 2025

Workforce Turnover Dashboard Power BI to Plotly Rebuild
JavaScript
Plotly
BI
Federal
Workforce Analytics

An interactive workforce-turnover dashboard rebuilt in Plotly.js as a proof-of-concept open-source alternative to a Power BI report I maintain at a federal agency. Filters…

Apr 10, 2025

UTF-8 CSV Converter
C#
ETL
Data Integrity
Federal

A C# utility for normalizing federal source-system CSV exports encoding detection, UTF-16 → UTF-8 conversion, embedded-newline sanitization, and idempotent rename. Shipped…

Jan 16, 2025
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