In testing

Yma — Plataforma mobile

Native app, admin panel and API — three fronts, one product

A product made of a React Native app, a web admin panel and a Fastify API. I work on the app’s design and structure, bringing features born for desktop onto the phone.

Technologies

React Native
Expo
TypeScript
React Navigation
Fastify
Prisma
PostgreSQL
Zod
Cloudinary
React Three Fiber
Vitest

Context

The product existed as a web application designed for a large monitor. Moving it to the phone was not a matter of shrinking the screen: it was deciding what survives when the usable area drops to an eighth.

Challenge

Information density designed for desktop, incompatible with one-handed use.
Long flows that had to be broken up on mobile without losing context.
Heavy media (image and video) travelling over a mobile network.

Solution

Navigation restructured into tabs, with bottom sheets for secondary actions instead of new screens.
On-device image processing before upload, cutting payload weight.
Schema-validated API contract on both ends, preventing drift between app and server.

Outcome

Application in testing, with an Android build distributed.
Transition between web and mobile with no relearning required from the user.

Highlights

Native Expo app with tab navigation, bottom sheets, image capture and editing, haptics and Android builds.
Push notifications delivered through Expo’s push service.
Fastify API with schema-driven contract validation, Swagger documentation and JWT authentication.
Admin panel with data tables, in-browser media processing and 3D visualisation.