Mario Gómez Arias

Led end-to-end development of a new internal Android logistics application from scratch, owning architecture, modularization, navigation, UI, and release pipeline. Delivered production-ready features supporting daily operations for over 1,000 trucks across Mercadona’s logistics network. Implemented Jetpack Compose as the primary UI framework, enabling faster iteration and improved UI consistency. Designed deep-link communication with a legacy application, coordinating with backend, product, and design teams to ensure a smooth migration. Integrated analytics and observability tooling (Sentry, Amplitude) to monitor crashes, performance, and user behavior. Built CI/CD pipelines using GitHub Actions, enabling automated testing, builds, and progressive rollouts through feature flags (Unleash). Applied test-driven development practices using Kotest, MockWebServer, and coroutine-based testing to ensure reliability and maintainability.

Delivered custom Android applications for small businesses and individual clients, handling full lifecycle development from requirements definition to production delivery. Built complex UI flows using Kotlin and Jetpack Compose, balancing performance, usability, and clean architecture. Worked autonomously with clients, managing scope, timelines, and technical trade-offs in a remote setting.

Maintained and evolved the Movistar+ Android streaming platform as part of a fully remote, cross-functional team. Refactored the downloads module from Java to Kotlin, improving architecture, test coverage, and long-term maintainability. Led internal Kotlin upskilling sessions to support team-wide adoption of modern Android practices. Integrated advanced media playback using ExoPlayer for live streaming and VOD content.