Jonathan Leahy
Full-stack developer. Builder of things.
Staff Engineer at Pismo (acquired by Visa), building payments infrastructure at scale. Nights and weekends I'm building Gyrum — a self-improving software factory that builds, tests, and deploys products autonomously.
Featured Projects
Gyrum.ai
An autonomous software factory that builds, tests, and deploys products. 93+ projects shipped.
Distill
Paste a YouTube URL, get a structured research report. Fact-checking, chapters, actionable items.
Buzzy
Family chore bounty board where kids earn pocket money. Multi-currency, QR invites.
Cannon Drop
PlayPhysics-based browser game. Aim, fire, destroy targets.
Prism Light
PlayA light-bending puzzle game. Redirect beams through prisms to solve levels.
Get in touch
// annotations drawn from the real bio — 20+ yrs (NHS → fintech → Pismo/Visa), 93+ projects shipped at Gyrum. Nothing here is invented; the dimension line and callout draw once on view, then hold still.
the page dimension-lines itself — 20 YRS, 93 SHIPPED — claims drawn as measurements. (real data)