Amzath
Yehouessi.
I build mobile and web applications from idea to production.
I'm Toby, a developer who builds mobile and web applications from idea to production. I care about doing things properly — clean architecture, clear communication, and products that don't fall apart after launch.
Latest writing
Add Google sign-in to an Expo app and an Express API, step by step
A complete walkthrough with screenshots: Google Cloud consent screen, the Web and Android OAuth clients, the SHA-1 from EAS, ID token verification on an Express API, account linking, and the two mistakes that cost me an afternoon.
The bug that only showed up after I'd already fixed the first one
Preloading a TikTok embed to kill tap-to-play lag in a video feed fixed one problem and quietly introduced a worse one: a visible snap back to frame 0, on every first play. Two wrong fixes before the right one.
Meta's WhatsApp App Review: where the real instructions are hidden
The permission descriptions in the dashboard tell you almost nothing. The actual per-permission instructions are buried two clicks deep in a screen most people never open, and guessing wrong costs you a day.
Selected work
MonGroupage — Freight Platform for West African Importers
A freight groupage platform connecting small importers in West Africa to Chinese suppliers — from browsing a catalogue to tracking a shipment through customs to pickup, plus the back-office that runs it.
LogeAfrica — Mobile Real Estate Marketplace
A mobile marketplace that turns TikTok-sourced real estate listings in Bénin into a structured, swipeable video feed with in-app messaging and mobile money payments.
Dotaga Translate — WordPress SEO Translation Plugin
A translation plugin that turns a monolingual WordPress site into a multilingual one, with SEO-friendly URLs and full translation management.