In my role as a Software Engineer III at Stone, I work on the development and maintenance of the credit and debit card product using Kotlin Multiplatform (KMP) to share code for ViewModels, service layers and states control, and SwiftUI for the UI layer on iOS.My responsibilities include migrating previous technologies (Swift with UIKit and Kotlin with Compose) to KMP and SwiftUI in a modularized manner, allowing the same codebase to be integrated into different applications and developing scalable solutions to address the gaps of the multiplatform approach.My work on the migration to KMP enabled the integration of the credit and debit card product into both the TON app, developed in React Native, and the Stone app, built with native languages (Kotlin and Swift), without any loss or degradation of pre-existing code.In parallel, I interact with CI/CD automation tools and scripts to automate project routines, as well as ensuring test coverage for all layers, with unit tests for logical parts and snapshot tests for UI layers.

At Stone, I developed various features for the application, but mainly focused on the chat, insurance, and currently the card products. We have a very strong and present culture in day-to-day, and team play is one of the most important pillars of it. During my time here, I was able to learn and teach a lot, working on projects such as the company's first iOS bootcamp, and giving some talks on technical subjects like unit testing and reactive programming with RxSwift.