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Sergio L.SL

Sergio L.

Java and React Native Programmer

€190/day
Valencia, ES
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sergio

I primarily work as a backend and full-stack developer in Java environments, using frameworks likeJSFor **ZK**, integrated with Spring and Hibernate to build robust and scalable web applications. My experience ranges from designing architectures and data models to implementing functional and secure interfaces, always seeking a balance between performance, maintainability, and a good user experience.

In my free time, I enjoy exploring mobile development by creating applications with React Native and Expo. These personal projects allow me to experiment with new technologies and creative UI/UX approaches.
  • Spanish

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • Indra
    Computer Engineer
    May 2010 - Today (16 years and 1 month)
    Experience in developing enterprise applications using Java, interface frameworks like ZK and JSF, and modern web technologies. I have participated in the design and maintenance of robust systems based on MVC architecture, focusing on usability and efficiency. Additionally, I have knowledge in React Native, aimed at creating cross-platform mobile applications (iOS/Android), applying good development practices, responsive design, and connection with REST APIs.
  • UPV
    Web Programmer
    SOFTWARE PUBLISHING
    January 2007 - March 2010 (3 years and 2 months)
    Valencia, Spain
    Maintenance of a web project and administrative tasks for the artificial intelligence master's programs at the Polytechnic University of Valencia.
    Web Development

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Education

  • Technical Engineering in Management Computer Science
    Polytechnic University of Valencia
    2005

Skill set

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