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Juan Agustín Rodríguez ValleJA

Juan Agustín Rodríguez Valle

Senior Android / Kotlin Lead · Compose · KMP · Arq

€270/day
Madrid, ES
15+ years
Android
Kotlin Multiplatform
Kotlin
Jetpack Compose
GitHub

Average response time: 1 hour

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About Juan Agustín

Senior Android developer / Android Lead with over 10 years of experience building, maintaining, and evolving production Android applications.

I help companies and product teams build mobile applications from scratch, define a solid and scalable architecture, and develop modern Android solutions with Kotlin, Jetpack Compose, and best engineering practices.

I can also add value to existing projects, helping to improve technical quality, reduce debt, progressively migrate to Jetpack Compose, optimize CI/CD processes, or prepare the app for maintainable growth.

I can help you with:

  • Developing Android applications from scratch;
  • Defining mobile architecture;
  • Kotlin, Coroutines, Flow, and Jetpack Compose;
  • Modularization and best practices;
  • Progressive migration from XML to Compose;
  • Integration with APIs, local databases, and external services;
  • CI/CD with GitHub Actions or Azure DevOps;
  • Testing, code quality, and static analysis;
  • Technical audit of existing Android apps;
  • Evaluating Kotlin Multiplatform for sharing logic between Android and iOS;
  • Technical leadership and mentoring Android teams.

My approach combines product vision and technical judgment: building useful, maintainable applications ready to evolve, avoiding oversized solutions and always prioritizing real value for the user and the business.

  • Spanish

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Colkie | sesh,
    Android Lead
    ENTERTAINMENT AND LEISURE
    January 2022 - Today (4 years and 5 months)
    Madrid, Spain
    • Responsible for leading an Android development team, overseeing task planning, distribution, and tracking.
    • Management of development best practices and requirements analysis.
    • Design and definition of Android application architecture.
    • Creation of views with Jetpack Compose.
    • Implementation of pipelines in Github Actions for continuous integration and deployment.
    Android Jetpack Compose Tech Lead Mobile application AI
  • Ole Digital Solutions SL,
    Android Lead
    SOFTWARE PUBLISHING
    November 2017 - April 2019 (1 year and 5 months)
    Madrid, Spain
    • Design, programming, and implementation of various Android applications.
    • Supervision of technical requirements and deadline compliance for each project.
    • Utilization of technologies such as Room, Retrofit, and MVP and MVVM design patterns.
    • Development of applications such as "AdoptaUnAbuelo" and the Ministry of Foreign Affairs application.
    Android Mobile application Kotlin Architecture
  • Innocv Solutions,
    Senior Android Developer
    BANKING AND INSURANCE
    April 2019 - December 2021 (2 years and 8 months)
    Madrid, Spain
    • Active participation in defining objectives, approach, and scope of proposed solutions.
    • Design, maintenance, and development of new features for Android applications.
    • Development of high-quality, easily maintainable code.
    • Utilization of technologies such as Room, Dagger 2, Retrofit, and MVVM design patterns.
    • Creation of pipelines for continuous integration using Azure DevOps, Jacoco, SonarQube, and Detekt.
    • Implementation of unit tests with JUnit, Jacoco, and SonarQube to ensure coverage.
    Android GitHub Jetpack Compose Architecture Mobile application
Check out Juan Agustín's experience

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Education

  • Master's Degree in Mobile Computing
    Pontifical University of Salamanca
    2021
    Máster Universitario en Informática Móvil
  • Master's Degree in Intelligent Systems
    University of Salamanca,
    2013
    Máster de Sistemas inteligentes
Check out Juan Agustín's education

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