Robert Ocasio

@rocasio

Developer & Genealogist | Local-first architecture, Web Workers, and AI integration.

Brooklyn, NYJoined April 2026

About

🧠 Software Engineer - Coder for decades: C#, JS, React & much more 💡 Exploring clean, joyful, intuitive code

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Robert Ocasio's blogs

Building Genealogix | Local-First Family Historyblog.genealogix.ai4 posts

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Recently published

RORobert Ocasioblog.genealogix.aiApr 28 · 3 min read

Tech Tuesday: Building a Local-First Search Engine with Web Workers

Welcome back to Tech Tuesday! If you look at any major genealogy platform today, the search bar is the center of the universe. Users expect to type in "John Smith Brooklyn" and instantly see a filtere

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RORobert Ocasioblog.genealogix.aiApr 21 · 3 min read

Tech Tuesday: Taming React and D3.js to Render Massive Family Trees

Welcome back to Tech Tuesday! Last week, we dove into the invisible engine of Genealogix: how we use IndexedDB and .gnlx bundles to build a local-first application without a centralized cloud database

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RORobert Ocasioblog.genealogix.aiApr 15 · 4 min read

Tech Tuesday: How Genealogix Stores Your Data Without a Cloud Database

Welcome to the first installment of Tech Tuesday! When I first started building Genealogix, I had a strict, non-negotiable rule: zero cloud databases. To fulfill the mission of helping people stop ren

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RORobert Ocasioblog.genealogix.aiApr 12 · 5 min read

Vibe-Coding My Family Tree: The Birth of Genealogix

Growing Up With 100 Cousins My name is Robert, and I grew up in Brooklyn, New York, with my parents and brother. My parents were both born in Puerto Rico before World War II, and moved to New York in

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Robert Ocasio

About

Available for

Robert Ocasio's blogs

Recently published

Tech Tuesday: Building a Local-First Search Engine with Web Workers

Tech Tuesday: Taming React and D3.js to Render Massive Family Trees

Tech Tuesday: How Genealogix Stores Your Data Without a Cloud Database

Vibe-Coding My Family Tree: The Birth of Genealogix

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Robert Ocasio

About

Available for

Robert Ocasio's blogs

Recently published

Tech Tuesday: Building a Local-First Search Engine with Web Workers

Tech Tuesday: Taming React and D3.js to Render Massive Family Trees

Tech Tuesday: How Genealogix Stores Your Data Without a Cloud Database

Vibe-Coding My Family Tree: The Birth of Genealogix