Hello, I'm Uilton Santos

A minimalist football management game for quick sessions. Fully offline, with a local SQLite database, device language detection and file-based navigation.

Multi-tenant warranty management web application. Upload invoices, extract metadata automatically, track warranty expiration, and get notifications.

Mobile app for splitting shared expenses between friends. Replaces spreadsheets and awkward money conversations with automatic balance calculation and settlement suggestions for group trips, dinners and household costs. Sole developer: product, design and full-stack implementation.

A digital menu/catalog platform for end users. The customers are storekeepers who can manage their products and publish them anywhere through a QR code.

Built internal Flutter apps for the railway industry: Second Agent & Machinist (schedules, station services and crew communication), Train Mirror (a 4-camera view replacing the physical train mirror) and Strobe Flashlight (Bluetooth-driven flashlight control). Also built their device, metrics and hub management platform for the energy field, with a C# .NET Core backend and a React (Vite) frontend.

Worked as a consultant for the OneFootball app, building new features in Flutter and supporting the legacy native Android code (Java and Kotlin with Compose).

Consultant for the Equity Bank Android app, responsible for code quality, running code reviews and proposing improvements. Main achievement: refactoring almost the entire app, introducing a modular project architecture.

A personal app to spread information about molar pregnancy, sharing my own story with my wife and giving hope to women who lack information about it. The first version (2018) was Android-only in Kotlin; in 2020 I rebuilt it in Flutter to reach more platforms.

Built this app from scratch as a freelancer, while also mentoring two junior developers on the project.