Derek Castelli
I’m a Christian and a designer who builds.
Home is with my wife, two dogs and two cats.
I’ve made sites like Throne 
and Care Continuity 
with Kem Design; Christ Community Church 
and River Valley Church 
with Apollos; and Exodus51 
and Bowen Design & Print 
on my own. All 29 sites
I write about what I’m learning, too, like The 48 hour project
The 48 hour projectIt all started with a text message at 3 am on Sunday March 8th. The text was from one of my best friends. The…
, I turned 37I turned 37I turned 37 today. I have mixed feelings. On one hand I can feel this year already being a year of growth for me.…
, and Dogfood or die because of AIDogfood or die because of AII’ve written quite a bit about AI. I use it and am optimistic about it vs the doom and gloom. However, I’m frustrated because…
. All 79 posts I’m a designer who can’t help but build things.
These are my apps, made under Testament Made. Pick one from the dock and poke around.
Harvousharvous.com 1 of 3 
A notes app designed for Bible study—threads, scripture, and recall. harvous.com ↗
Here's My Churchheresmychurch.com 1 of 3 
Interactive map of U.S. churches—accurate, searchable, crowd-sourced. heresmychurch.com ↗
Right now
I’m making sites with Kem Design ,
looking after 6 apps of my own
with 2 more on the way,
and reading The Courage to Be Disliked 
The Courage to Be DislikedIchiro Kishimi & Fumitake Koga .
Available Dec 18.
The Courage to Be DislikedIchiro Kishimi & Fumitake Koga Kind words
“A crucial, fun partner to work with.”
What it’d cost
of 5 pages, designed and built, with a CMS your team can update, would be about $5,900.
, a new mark and wordmark, would be about $800.
in one week-long sprint, starting fresh, would be about $1,500.
on your site, as written notes, would be about $250.
, an automation, small in scope, would be about $1,000.
I could start Dec 18. The full estimate