Sites
The sites I've designed and built, on my own and with studios I love working alongside.
2026
CrowdHealth Oct Solo · Brand Identity ReviseMy Jul Solo · Design & Development Bowen Design & Print Jul Solo · Design & Development Exodus51 Jul Solo · Design & Development Harvous.com Jul Solo · Design & Development Care Continuity Apr With Kem Design · Design & Development Throne Mar With Kem Design · Development Miravoice Mar With Kem Design · Development
2025
Emily Trampel Insurance Agency Dec Solo · Design & Development Claimable Nov With Kem Design · Design & Development Eternity Church Oct Solo · Design & Development NameSnag Jul Solo · Design Mantle Jul With Kem Design · Design & Development Christ Community Church May With Apollos · Design & Development @bitcoin May With Jamm · Development Gazel AI Apr With Jamm · Development AI Explorer Apr With Jamm · Development The Modern Freelancer Feb With Kem Design · Development
2024
River Valley Church Dec With Apollos · Design & Development Seacoast Church Nov With Apollos · Design & Development David Energy Oct With Kem Design · Design & Development Revise.dev Sep Solo · Design Growist Aug With One Branding · Design SchemaKit Aug Solo · Design Matter Jul Solo · Development Community Circle May With One Branding · Design Hilary Prall May With One Branding · Development Franklin International Mar With One Branding · Design LinkScout Feb Solo · Design
2023
Scenery Nov Solo · Design & Development Zero to Three Aug With Design Ranch · Development ManchestorStory May With One Branding · Design
2022
TutorMe Nov With One Branding · Design & Development Geo-Loop Feb Solo · Design & Development
What people say
“My favorite website we've completed in just 6 months.”
We're celebrating the launch of River Valley's new website! Go check it out! Shoutout to Josh Coyle and Derek Castelli for what happens to be my favorite website we've completed in just 6 months!
“Oh man, that’s legit.”
There’s a guy named Derek who, whenever I post these side projects, he’s like, “Hey man, I made a logo for you.” And then I’ll be like, oh man, that’s legit. Send me a Stripe invoice link and I’ll send you some money. This has happened maybe like five times now, where he does this and then I just give him money, unprompted.
“A crucial, fun partner to work with.”
Derek helped me revamp Scenery's brand, logo, and website in the first two months of my tenure and was a crucial, fun partner to work with throughout the process. Derek had a well defined process, integrated into the team well, and came up with creative approaches when they were most needed — at both the start and finish of the project. Thank you Derek!
“Visually exceptional and user-friendly interfaces.”
I highly recommend Derek for his exceptional skills in User Interface (UI) design and Webflow Development. Derek's creative approach to UI consistently delivers visually exceptional and user-friendly interfaces that drives results. His proficiency in Webflow empowers him to bring his designs to life with seamless functionality and responsiveness. Derek's attention to detail, collaborative nature, and commitment to staying current with design trends makes him a valuable asset to any project.
“A unique drive to always seek out the best solution.”
Derek is an incredibly talented Designer and Webflow Developer with a unique drive to always seek out the best solution and learn new things along the way.