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Mario Avilés GarcíaMA

Mario Avilés García

Desarrollador Web y APIs Junior

€100/day
Cartagena, ES
0-2 years

Average response time: 1 hour

About Mario

Backend-focused junior developer with hands-on experience building REST APIs, task automation, and complete applications from scratch.

I mainly work with Java and Spring Boot for backend development, using PostgreSQL as my primary database. I’m comfortable working with Docker and Git, and I follow clean, structured development practices.

In addition to backend development, I’m open to projects related to Data, Big Data, and API-based integrations, where I can continue growing and adding value quickly.

I’ve worked on personal and small professional projects involving:
- REST API design and implementation
- Task automation and integrations
- Backend logic for full applications
- Containerized development environments with Docker

I’m an autodidact developer who learns fast, adapts quickly to new requirements, and communicates clearly throughout the project. If you’re looking for a reliable junior developer with a strong backend foundation and a growth mindset, I’d be happy to help.
  • Spanish

    Native or bilingual

  • English

    Basic

Can work on-site
Cartagena (up to 50km)

Experience

  • GEA SISTEMAS
    FCT SISTEMAS MICROINFORMÁTICOS Y REDES
    March 2023 - June 2023 (3 months)
    Cartagena, Spain
    Prácticas formativas en Sistemas Microinformáticos y Redes, realizando tareas de instalación, configuración y mantenimiento de equipos informáticos, sistemas operativos y redes locales. Soporte técnico a usuarios, resolución de incidencias de hardware y software, configuración básica de servicios de red, copias de seguridad y aplicación de buenas prácticas de seguridad informática en entornos reales.
    Project Management Network administration Graphic Design Redes sociales Canva
  • NTT DATA
    FCT DESARROLLO DE APLICACIONES WEB
    March 2025 - June 2025 (3 months)
    Murcia, Spain
    Formación en Centros de Trabajo en Desarrollo de Aplicaciones Web, participando en el diseño, desarrollo y mantenimiento de aplicaciones web. Implementación de funcionalidades backend y frontend, consumo de APIs REST, gestión de bases de datos, depuración de errores y trabajo con control de versiones, aplicando buenas prácticas de programación en entornos reales.

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Education

  • SISTEMAS MICROINFORMÁTICOS Y REDES
    CIFP CARLOS III
    2023
    SISTEMAS MICROINFORMÁTICOS Y REDES
  • DESARROLLO DE APLICACIONES WEB
    CIFP CARLOS III
    2025
    DESARROLLO DE APLICACIONES WEB

Skill set

Categories