Available for new work — Fall 2026
Software that ships. Judgment you can trust.
Full-stack and mobile builds for early companies, plus fractional CTO guidance for founders navigating the calls that are expensive to get wrong.
Book a technical audit →
Brewd
Flying Hippo
Sparrow Computing
- Brewd
- Flying Hippo
- Sparrow Computing
- Brewd
- Flying Hippo
- Sparrow Computing
01Services
Two ways to work with me.
Build
Design & engineeringFull-stack web and mobile apps, shipped end to end — from spec and architecture through launch and a clean handoff.
Explore Build →Advise
Fractional CTOSenior technical judgment for teams not ready for a full-time CTO — roadmap, hiring, and the calls that are expensive to get wrong.
Explore Advise →02Selected work
A few things I've shipped.
Launched a fintech app in 14 weeks
From an empty repo to a shipped App Store product — CI, analytics, and a design system the team still builds on.
Rebuilt a creaky internal tool into a fast product
Cut load times ~70% and gave a non-technical team a codebase they could safely extend on their own.
Set the technical direction for a seed-stage startup
Hired the first two engineers, chose the stack, and shipped the MVP that investors funded.
03Kind words
“John shipped what two agencies couldn't, and explained every decision so I could actually follow along.”
Let's talk
Building something? Let's talk about it.
Tell me about your project or team and problem and we'll discuss if there is a good fit.