Jeffandy St.Hubert

Data Engineer specializing in dimensional modeling and scalable ELT pipelines with production experience across nonprofit, energy, and semiconductor sectors. MIT-certified in Data Science & Machine Learning. Built data architectures that drove a 1,200% revenue increase and automated manual processes saving 2+ hours weekly. Background in elite performance environments (Global Tours with Ms. Lauryn Hill & Kanye West) translates to discipline in building resilient systems under pressure.

Languages

SQL

SQL

Python

Python

Bash

Bash

Databases & Warehouses

PostgreSQL

PostgreSQL

Snowflake

Snowflake

Supabase

Supabase

Cloud & Infrastructure

Docker

Docker

GitHub Actions

GitHub Actions

Linux

Linux

Data Orchestration

dbt

dbt

Airbyte

Airbyte

API Integration

API Integration

Tools

Git

Git

Streamlit

Streamlit

Flask

Flask

Looker Studio

Looker Studio

Tableau

Tableau

Featured Data Projects

Production-grade data engineering and analytics solutions

End-to-End Productivity Analytics Platform

Live Demo →

End-to-End Productivity Analytics Platform

  • Architected a production-grade ELT pipeline extracting time-series data from iPhone app APIs, processing 1,000+ daily activity records with automated error handling and logging.
  • Designed a normalized PostgreSQL schema in Supabase, implementing strategic indexing to optimize query performance for real-time analytics.
  • Automated the full lifecycle via CI/CD workflows, connecting GitHub repositories to Streamlit Cloud for seamless, version-controlled deployments.
  • Engineered an interactive dashboard that reduced manual data synthesis time by 90%, providing instant visibility into high-level productivity trends.
Church Community Analytics Platform

Church Community Analytics Platform

Multi-source data warehouse integrating Eventbrite, Zoom, and Salesforce using Airbyte, dbt, and BigQuery to track member engagement lifecycle for a 500-seat NYC congregation. See more details below in Professional Experience.

Professional Experience

Data engineering roles across energy and semiconductor sectors

Church of The Advent Hope

Data Engineer

Advent Hope Church (NYC) — Pro Bono | Jan 2026 - Present

  • Building multi-source ELT pipelines integrating Eventbrite, Zoom, and Salesforce data into BigQuery using Airbyte, serving a 500-seat NYC congregation.
  • Designing dimensional models (Kimball methodology) with star schema and Type 2 slowly changing dimensions to track member lifecycle: Guest → Regular → Core.
  • Developing dbt transformation layer with automated data quality tests covering schema validation and business logic.
  • Automating participant classification in SQL, eliminating 2+ hours of weekly manual review by pastoral staff.
  • Deploying Looker Studio dashboards for real-time community engagement insights used weekly by church leadership.
Sun Coast Resources

Data Engineer

Sun Coast Resources, LLC | 2024 - 2025

  • Architected a lead-generation engine aggregating data from Google Search and U.S. EPA databases, directly resulting in 15 new clients and a 1,200% revenue increase in the Georgia market within two quarters.
  • Engineered a robust ETL workflow extracting 10,000+ records via APIs, utilizing Python (pandas) and PostgreSQL to transform raw data into actionable facility insights.
  • Optimized data extraction reliability by implementing pagination and batch processing to operate efficiently within strict API rate limits.
AMD

Software Engineer Co-op

Advanced Micro Devices (AMD) | 2012 - 2013

  • Increased test automation efficiency for major processor launches (FX-6100/8150) using Python, Perl, and shell scripting.
  • Streamlined validation infrastructure within an Agile environment, collaborating cross-functionally to reduce test cycle times.

Education

Academic credentials and professional certifications

Massachusetts Institute of Technology (MIT)

Certificate in Data Science & Machine Learning | 2024

Wentworth Institute of Technology

B.S. in Electronic Engineering Technology | 2013

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