Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I’m Mario Gómez Arias, a Senior Android Engineer with 7+ years of experience building production-grade Android apps across logistics, streaming, and fintech. I’m Kotlin-first, enjoy Jetpack Compose, scalable architectures, and robust CI/CD automation. I’ve delivered end-to-end mobile solutions in remote-first, fast-moving teams, taking ownership from architecture to release. I thrive on collaborating with cross-functional teams and mentoring peers. I’ve led migrations from Java to Kotlin, built modular multi-module apps, integrated analytics and observability, and implemented feature flags for safe releases. I’m open to remote contract opportunities with US-based teams.…Hi, I’m Mario Gómez Arias, a Senior Android Engineer with 7+ years of experience building production-grade Android apps across logistics, streaming, and fintech. I’m Kotlin-first, enjoy Jetpack Compose, scalable architectures, and robust CI/CD automation. I’ve delivered end-to-end mobile solutions in remote-first, fast-moving teams, taking ownership from architecture to release. I thrive on collaborating with cross-functional teams and mentoring peers. I’ve led migrations from Java to Kotlin, built modular multi-module apps, integrated analytics and observability, and implemented feature flags for safe releases. I’m open to remote contract opportunities with US-based teams.

Mario Gómez Arias

App Developer, Full Stack Developer, Web Developer, +2





Hi, I’m Mario Gómez Arias, a Senior Android Engineer with 7+ years of experience building production-grade Android apps across logistics, streaming, and fintech. I’m Kotlin-first, enjoy Jetpack Compose, scalable architectures, and robust CI/CD automation. I’ve delivered end-to-end mobile solutions in remote-first, fast-moving teams, taking ownership from architecture to release. I thrive on collaborating with cross-functional teams and mentoring peers. I’ve led migrations from Java to Kotlin, built modular multi-module apps, integrated analytics and observability, and implemented feature flags for safe releases. I’m open to remote contract opportunities with US-based teams.…Hi, I’m Mario Gómez Arias, a Senior Android Engineer with 7+ years of experience building production-grade Android apps across logistics, streaming, and fintech. I’m Kotlin-first, enjoy Jetpack Compose, scalable architectures, and robust CI/CD automation. I’ve delivered end-to-end mobile solutions in remote-first, fast-moving teams, taking ownership from architecture to release. I thrive on collaborating with cross-functional teams and mentoring peers. I’ve led migrations from Java to Kotlin, built modular multi-module apps, integrated analytics and observability, and implemented feature flags for safe releases. I’m open to remote contract opportunities with US-based teams.

Available to hire

Hi, I’m Mario Gómez Arias, a Senior Android Engineer with 7+ years of experience building production-grade Android apps across logistics, streaming, and fintech. I’m Kotlin-first, enjoy Jetpack Compose, scalable architectures, and robust CI/CD automation. I’ve delivered end-to-end mobile solutions in remote-first, fast-moving teams, taking ownership from architecture to release.

I thrive on collaborating with cross-functional teams and mentoring peers. I’ve led migrations from Java to Kotlin, built modular multi-module apps, integrated analytics and observability, and implemented feature flags for safe releases. I’m open to remote contract opportunities with US-based teams.

Skills

Experience Level

Expert

Expert

Expert

Expert

Intermediate

Language

Spanish; Castilian

Fluent

English

Advanced

Work Experience

Senior Android Engineer at Mercadona Tech

August 1, 2024 - Present

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.

Android Developer at Freelance Android Developer

October 1, 2023 - August 1, 2024

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.

Android Developer at Movistar+ (Telefónica)

November 1, 2021 - October 1, 2023

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.

Android Lead at Vanadis

July 1, 2020 - October 1, 2021

Led a team of four Android developers across multiple client projects, defining base architecture and technical standards. Mentored developers through code reviews, documentation, and regular technical sessions. Delivered real-time communication features, including a custom WebSocket-based chat module.

Android Developer at Sngular

April 1, 2019 - June 1, 2020

Developed Android banking applications with a strong focus on security and performance. Implemented biometric authentication features and supported international app launches.

Android Developer at Iphonedroid

July 1, 2018 - April 1, 2019

Developed Android features using MVP and RxJava. Implemented QR and barcode scanning functionalities.