At Carrefour Spain, I’m the main developer of MiCarrefour and define and build base architecture components used across the company’s mobile apps. I cut app launch time by 50% on low connectivity by reworking threading, local storage, and Firestore-backed sync so key flows work offline.
I drove MiCarrefour’s iOS migration from UIKit/VIPER to SwiftUI/Combine/MVVM + Clean, reaching 85% adoption in 12 months and improving delivery speed by 35%. I also proposed and built an eight-module structure, co-design API contracts with Backend, and own releases on the App Store and Google Play.
Earlier, at Accenture, I worked on Renfe apps, including Sertren, a ticketing-operations app for on-board inspectors designed for poor coverage, with operations saved locally and synced when connectivity returned. I’m hands-on across native iOS and Android, and use production monitoring, automated tests, and code review to keep apps reliable.
