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Alfredo Rafael Espinosa PalenqueAR

Alfredo Rafael Espinosa Palenque

Fullstack Developer

€120/day
1 project
Zaragoza, ES
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Alfredo Rafael

I am a Fullstack Developer with more than 5 years of experience creating custom mobile and web applications, helping companies and entrepreneurs transform their ideas into functional, scalable and high-impact digital products.

I specialize in Flutter and native Android for mobile development, and in Laravel, PHP and Python for the backend. This combination allows me to offer complete solutions, from cross-platform applications with excellent performance to secure and scalable APIs that guarantee smooth integration with external services.

Throughout my career I have worked on projects ranging from MVPs for startups to complex platforms in production, always taking care of code quality, user experience and meeting deadlines.

🔹 What I can do for your project:

Cross-platform mobile application development (Flutter) and native Android.

Creation and optimization of APIs and backends with Laravel, PHP or Python.

Integration of external services and third-party systems.

Improvement of performance, scalability and user experience.

Comprehensive support: from architecture design to deployment in production.

My approach is practical and results-oriented: I prioritize clear communication and the delivery of solutions that really add value to your business and your customers.

If you are looking for a developer who can take care of both the technical part and understand the needs of your project, I will be happy to collaborate with you.
  • English

    Native or bilingual

  • Spanish

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Happy Tickets
    Fullstack Developer
    TRAVEL AND TOURISM
    October 2024 - Today (1 year and 10 months)
    Zaragoza, Spain
    • Developed mobile applications and web solutions using Flutter for cross-platform development (Android and iOS) and HTML, CSS, and JavaScript for web frontend.
    • Implemented new features and optimized performance in mobile and web applications, ensuring a smooth and efficient user experience.
    • Built and managed the backend using PHP and MySQL, developing RESTful APIs for the integration of ticketing and event management systems.
    PHP/MySQL JavaScript Android Fluter API REST
  • Ingenius Cuba
    Systems Engineer
    SOFTWARE PUBLISHING
    January 2022 - January 2024 (2 years)
    Havana, Cuba
    • Led the development of Android mobile applications using Kotlin and Jetpack Compose, applying the MVVM pattern to achieve scalability and code maintainability.
    • Implemented CLEAN architectures using MVP and MVVM, ensuring a clear separation of responsibilities and facilitating unit and integration testing.
    • Developed APIs with Laravel and Spring Boot, managing databases in MySQL and PostgreSQL, optimizing performance through code refactoring and improved SQL queries.
    • Used Jetpack Libraries such as Room, LiveData, ViewModel, and Coroutines to enhance efficiency and state management in applications.
    • Set up CI/CD pipelines with GitLab, automating tests and deployments, which improved team efficiency and enabled continuous development.
    • Conducted testing with JUnit, ensuring code quality through automated testing.
    • Managed development under agile methodologies, specifically Scrum, organizing sprints, reviews, and retrospectives to ensure continuous value delivery.
    • Worked closely with UI/UX designers and multidisciplinary teams to create user-centric, intuitive interfaces using XML and Jetpack Compose.
    Kotlin PHP/MySQL Flutter Laravel Android Development
  • Cienfuegos,
    Freelancer Developer
    SOFTWARE PUBLISHING
    January 2020 - January 2022 (2 years)
    Cuba
    • Developed mobile applications using Kotlin and Java, applying best practices in CLEAN architectures like MVVM and MVP for scalable application development. Leveraged Jetpack Libraries such as Room, LiveData, ViewModel, and Coroutines to improve efficiency and state management in apps.
    • Created web applications using PHP, Python and Angular, with seamless integration of MySQL and PostgreSQL databases.
    • Applied agile methodologies like Scrum to streamline development workflows, fostering effective collaboration within multidisciplinary teams.
    Kotlin JavaScript PHP/MySQL Python Android Development

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Education

  • Bachelor's Degree
    University of Cienfuegos
    2020
    Bachelor's Degree

Skill set

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