Jack Deng

Senior Software Engineer | Backend & Data Systems

JD

Hi, I'm Jack — a Software Engineer based in California, focused on designing reliable enterprise data systems and full-stack applications. I bridge business operations and technical infrastructure through robust backend architectures and scalable data pipelines.

This site is my public workspace: engineering notes, integration patterns, and tools I build along the way. It runs on Next.js + Payload CMS with a Supabase PostgreSQL backend.

Outside of work I'm probably debugging a flow, reading systems-design docs, or figuring out why the ETL ran 3 seconds slower than yesterday.

Skills & Stack

Database

PostgreSQLNetSuiteSQL ServerSupabase

Integration

BoomiREST APIsEDI / SFTPWebhooks

Development

TypeScriptPythonNode.jsNext.js

Tools

DockerVercelGitHub ActionsCI/CD

Experience

  1. 01/2024 – present

    Software Engineer (Backend & Data) @ Value Windows & Doors

    • Built a 0-to-1 cloud data platform on Databricks + dbt with a medallion (Bronze→Silver→Gold→Mart) architecture, turning raw ERP data into analytics-ready models for manufacturing, inventory, sales, and workforce reporting.
    • Engineered C# and Python data-migration and integration pipelines that improved ERP reliability and processed tens of thousands of records daily across departments.
    • Delivered Power BI executive dashboards and React internal portals, giving teams self-serve access to real-time operational metrics.
    DatabricksdbtPythonC#ReactPower BI

  2. 07/2022 – 01/2024

    Software Engineer Intern @ APEXUS-TECH

    • Built a data-visualization tool that streamlined quantitative strategy analysis for the operations desk, improving decision-making speed.
    • Developed Python + MySQL backend services that automatically ingested and persisted financial-market data, keeping analyses up to date.
    • Designed ETL pipelines that lifted batch-processing efficiency by 40% and shipped internal monitoring dashboards with the product team.
    PythonMySQLETLJavaScriptHTML/CSS

  3. 03/2022 – 07/2023

    M.S. Analytics @ Northeastern University

    • M.S. in Analytics, GPA 3.93/4.0 — coursework spanning data warehousing, predictive analytics, and enterprise data systems.
    • Served as Data Warehousing & SQL Tutor (ALY6030), coaching graduate students on SQL performance tuning, indexing strategies, and execution-plan analysis.
    SQLData WarehousingStatisticsPython

Find me online

GitHubLinkedInLeetCodeEmailResume

Interested in working together or have an integration challenge?

Get in touch

Or read what I've been writing lately →.