You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Joan Costa GarcíaJC

Joan Costa García

Fullstack Developer

€150/day
Madrid, ES
3-7 years

Average response time: 1 hour

About Joan

I have worked for two years in web development, where I have built and maintained different types of websites and web applications. During this time I have developed practical experience with HTML, JavaScript, Java, MySQL, PHP, WordPress, React and Node.js. My work has included building front end interfaces, implementing backend logic, connecting databases and fixing bugs in existing systems.

Through this experience I have learned how to structure web projects, write clean and maintainable code and solve technical problems efficiently. I am comfortable working with both client side and server side technologies and adapting to different project requirements.

In my personal projects I have also worked with C# and C++. These projects helped me strengthen my understanding of programming fundamentals and software architecture. I am especially passionate about object oriented programming, including concepts such as encapsulation, inheritance and modular code design.

In addition to my web development experience, I have academic training in artificial intelligence development, Python and Big Data. This has given me experience working with data processing, algorithmic thinking and the fundamentals of machine learning systems.

I enjoy learning new technologies, improving code quality and building efficient and scalable solutions. I am particularly interested in combining web development with data driven systems and modern software architectures.
  • Spanish

    Native or bilingual

  • English

    Fluent

  • Catalan

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Rayian air
    Database engenier
    DIGITAL AND IT
    January 2025 - December 2025 (11 months)
    Madrid, Spain
    Was in charge of mantaining and improving Ryanair database using Aurora where i learned the usage of MySQL combined with amazon services
    Amazon Aurora MySQL
  • Refineria
    Web Developer Fullstack
    May 2023 - May 2025 (2 years)
    I have worked for two years in web development, where I have built and maintained different types of websites and web applications. During this time I have developed practical experience with HTML, JavaScript, Java, MySQL, PHP, WordPress, React and Node.js. My work has included building front end interfaces, implementing backend logic, connecting databases and fixing bugs in existing systems.

    Through this experience I have learned how to structure web projects, write clean and maintainable code and solve technical problems efficiently. I am comfortable working with both client side and server side technologies and adapting to different project requirements.

    In my personal projects I have also worked with C# and C++. These projects helped me strengthen my understanding of programming fundamentals and software architecture. I am especially passionate about object oriented programming, including concepts such as encapsulation, inheritance and modular code design.

    In addition to my web development experience, I have academic training in artificial intelligence development, Python and Big Data. This has given me experience working with data processing, algorithmic thinking and the fundamentals of machine learning systems.

    I enjoy learning new technologies, improving code quality and building efficient and scalable solutions. I am particularly interested in combining web development with data driven systems and modern software architectures.
    HTML5 PHP JavaScript Wordpress Java

Recommendations

Be the first to recommend Joan

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Skill set

Categories