In progress
2026
CannyCart
A shared shopping-list app for web and mobile, built on one Amplify Gen 2 backend.
Next.js
Expo
TypeScript
AWS Amplify Gen 2
+5
Software engineer
Ibukun Demehin
Most of my work lives in the seam between a serverless backend and the app sitting on top of it. I build both sides — and write down the part the docs leave out.
Selected work
All projectsOpen source
2026
claude-skills
An open-source library of distilled, reusable engineering practice for AWS Amplify, Next.js and Expo.
AWS Amplify Gen 2
Next.js
Expo
TypeScript
+1
Live
2025
Form Builder
A from-scratch drag-and-drop form engine — authoring, schema storage and a runtime renderer.
Next.js
TypeScript
dnd-kit
zod
+2
Latest writing
All posts6 min read
The purchase ledger: when did you actually buy that?
Clearing the Done section felt like losing your history — but the record already existed as soft-deleted rows nothing read. One timestamp, three time semantics, and a documented exception to a house convention turned clearing into archiving.
aws
dynamodb
reactnative
buildinpublic
6 min read
Your app hardcodes GBP: currency as a first-class preference
A currency symbol is a user property masquerading as a constant. Unwinding one hardcoded £ touched state architecture (two kinds of readers, two stores, one setter), onboarding (guess, then confirm), and product honesty (relabel is never convert).
reactnative
i18n
mobile
buildinpublic
7 min read
What your receipts know: price history, "last paid", trends, savings
No price API exists, but after weeks of receipt scanning the user owns a dataset nobody sells. Three screens built on it — and the honesty gates, living in selectors not UI, that stop derived numbers from lying.
reactnative
datavis
mobile
buildinpublic