Data Engineer · Data Science · Cybersecurity

Efe Dincaslan

welcome to my personal website :)

There's more to the story than a résumé.

WORK EXPERIENCE

From banquet halls and BBQ pits to finance desks and consulting rooms — then securing enterprise systems, mining court records, and building full-stack AI platforms, with data engineering at Fidelity up next. Tap a chapter:

Data Engineer · Full-Stack Dev · PM

A2 Analytics · Charlotte, NC

Jun 2026 – Present

Took over a stalled data platform that had only one city built (Arlington, TX) — with serious data-integrity and data-limitation issues — and rebuilt it end to end into CensusFlow: a nationwide commute & workforce site covering all 50 states + DC (~1,160 city pages) in two and a half weeks, using Claude Code for engineering and Claude Design for the UI.
Engineered the full Python pipeline — ingesting the Census LEHD LODES dataset (25 tables, hundreds of millions of rows; the raw OD table alone ~546M) on a 500 GB Azure SQL database, transforming it into city-level data marts, rendering thousands of static pages, and publishing them via the WordPress REST API with Azure Blob Storage as the CDN.
Built the entire front end in vanilla JavaScript (no framework) — ~2,000+ lines across two WebGL maps (deck.gl + MapLibre GL) that draw each city’s commute as a live dot-density visualization (one dot ≈ 75 workers), with hover tooltips, dynamic legends, earnings/industry color modes, residents-vs-workers toggles, client-side search, and a custom responsive design system (~1,600 lines of CSS).
Built cross-state commuting from scratch — a capability the source data never had — through a 100M+ row global home-block join that correctly counts the ~7.5M Americans who commute across a state line (NJ→NYC, VA→DC), fixing previously-broken city stats like Washington, DC.
Enriched the data beyond LODES via the Census ACS API (commute time, work-from-home, income) and FCC broadband data across 1,732 cities — running hundreds of SQL queries with data-integrity checks at every stage.

PythonAzure SQLdeck.glMapLibreClaude Code

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There's more to the story than a résumé.

Where the foundations were poured.