
About
Hi, I'm Justin. I've been writing software since 1997, and I've run Calendee LLC since 2006.
Why I Build
I want my software to help people, not replace them.
As a software developer, one of my favorite things is making people's jobs less stressful and chaotic. I love taking a slow, complicated manual process and turning it into a smooth, efficient system. It's rewarding to see people who were working overtime and struggling to keep up finally get some breathing room. Instead of shuffling paper, they can focus on work that matters more.
My wife Gráinne and I homeschooled our two kids from diapers to diplomas. A lot of what I build starts with a problem in my own family. Say My Name exists because people kept calling Gráinne "Granny". If I want something to exist in the world, I make it.
Volunteer Work
Most of my week goes to nonprofits in Collin County. I build the software they need and keep their computers, email and websites working, and I don't charge for it.
- CommonGoodMedical.org (ongoing): a custom volunteer and practice management application.
- Family Promise of Collin County (2025–2026): website development and technical support.
- Community Garden Kitchen in McKinney (2024): a custom inventory management application.
- McKinney Food Pantry (2019–2023): custom administration software.
- Kids In Touchwas free for every military family from 2015, in partnership with Our Military Kids.
Experience
Work I did as part of other companies' teams.
- 2018–2020
TechStyle Fashion Group
Mobile apps for JustFab and Fabletics.
- 2015–2018
RevUnit
Internal apps for one of the world's largest retailers, and a driver-management app for a shipping company.
- 2015–2017
Alan Seiden Consulting
Mobile app for a major construction supply company.
- 2014–2015
Velocis
Networking and contacts mobile app for conference attendees.
- 2006–2007
True Solutions Inc.
Website development and management.
- 1997–2013
Syniverse, Citizens Communications and MCI
Telecom networking, automation and productivity software.
- 1988–1994
US Navy
Electronics Technician and Nuclear Reactor Operator on a fast-attack submarine.
Tools I Use
- TypeScript
- Astro
- React
- React Native
- Expo
- Hono
- Cloudflare Workers
- Cloudflare D1
- LAMP