Available now for lead roles Remote
AI at every step after the idea
17 years of iOS, and now I build whole products with AI coding agents like Claude Code, Codex, and Cursor, owning the product decisions and the review. I was the sole iOS developer on Rumble Studio and built Men of Hunger solo, AI features included.
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I built Rumble Studio for iOS from scratch as its sole developer, then shipped every update on iPhone and iPad. The same iPad app runs on Vision Pro, with custom UI so eye tracking can highlight each control.
2,000+ creators adopted Studio by May 2024. Some who went live with it:
More creators in the Studio case study“The Rumble Studio feature is incredible. Effortless streaming on multiple platforms at the same time.”
Building now
Men of HungerA community for men centered on honest conversation, accountability, and personal growth.menofhunger.com Visit 
Greenlane A Men of Hunger project Finds Apple App Review issues before you submit by building, exploring, and checking your iOS app locally on your Mac.Origin story: Men of Hunger's iOS app has been fighting its way through App Review, so I'm building the tool I wish I'd had.greenlane.dev Visit The personal side of building
I build with AI at work, but I also use it to solve problems at home, preserve family history, and keep track of my finances.
I’m building an AI biographer for my memoir. Custom tools connect letters, photos, stories, and interviews through a graph of people and relationships, developing the book, a wiki, and a family tree.
Letters add a voice. Connections give it context.
I use household agents with my wife, connecting Linear home tasks, calendars, and email. A morning brief helps us get going. Evening wins help us close the day.
What’s coming up. What needs attention.
I use AI to organize my income, spending, expenses, and assets into a clearer picture of my finances.
Less scattered. More understandable. Illustrative workflow · no account data
Career
2009 to today. Drag through it, or use the arrow keys.
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Airside MobileWalmart Labs
Supersapiens
Rite Aid
CallinRumble2023 – 2026
Lead iOS Developer (Studio) · Senior iOS Developer (Video)
Sole iOS developer for Rumble Studio, a livestreaming app that streams to six platforms at once, adopted by 2,000+ creators by May 2024. Built it from scratch to the App Store with the backend and design teams, set the iOS technical direction, and owned every update on iPhone, iPad, and Vision Pro.
Joined via Callin acquisition · May 2023
Excerpt from James Whitney’s recommendation
…John single-handedly built the Rumble Studio app from the ground up.
James WhitneyStudio Lead at RumbleManaged John at Rumble Read the full recommendation I'm seeking a remote, full-time Lead or Staff Product Engineer role, ideally building AI-powered products. I'm also open to hands-on mobile leadership roles at smaller companies.
I take on select contract projects: product launches, AI features, architecture reviews, and improvements to existing products across iOS, web, and APIs.
Outside of tech Husband 3 kids and counting Landlord
