You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Sergio Balaguer CarmonaSB

Sergio Balaguer Carmona

Fullstack Developer

240 €/día
Santa Coloma de Gramenet, ES
8-15 años

Tiempo medio de respuesta: 1h

Acerca de Sergio

Hello, I’m Sergio Balaguer, a Freelance Fullstack Developer based on Barcelona.

I’m passionate about building scalable, high-quality web applications. By following principles like Clean Code and Clean Architecture, I deliver solutions that are maintainable, modular, and built to last.

What can I bring to the table?

Backend: Secure and optimized APIs developed with Node.js and Express.
Frontend: Modern, dynamic, and responsive user interfaces crafted with React.
TypeScript: Robust, clean, and maintainable code as a standard.
Infrastructure: Scalable environments orchestrated with Docker, ready for high availability.
Integrations: Tailored solutions integrating with services like S3, Redsys, or Brevo.

I’m confident my focus on best development practices can add value to your current or future projects. If you’re working on something exciting or have an idea in mind, let’s connect and explore how I can help.

Looking forward to hearing from you!
Best regards,
Sergio Balaguer
  • Español

    Bilingüe o nativo

  • Catalán

    Bilingüe o nativo

  • Inglés

    Competencia profesional completa

Solo teletrabajo
Lleva a cabo sus proyectos principalmente en remoto

Experiencia

  • Inetum
    Frontend Developer
    marzo de 2025 - julio de 2025 (4 meses)
    I led the acceleration of the first phase of the Plataforma d’Usuaris de les Aigües frontend application for Gencat’s Centre de Telecomunicacions i Tecnologies de la Informació (CTTI), ensuring alignment with the company's architectural guidelines.

    The platform is structured into three independent frontend applications forming a unified portal:
    - Admin: Manages administrative features such as inviting users to the employee
    portal or managing role assignments.
    - Employee: Supports internal operations like water-point management and citizen
    portal invitations.
    - Citizen: Provides access for citizens to view and, depending on permissions, update
    water-point information.

    One of the most notable features is an interactive map powered by MapLibre,
    displaying geospatial elements across different layers, filtered through a hierarchical tree-based interface.
    React.js Typescript Jest Clean Architecture Clean Code
  • Escenit
    Fullstack Developer
    septiembre de 2024 - diciembre de 2024 (3 meses)
    I worked on the new Cementos Molins website, focusing on refactoring legacy application features and integrating them into a modern and scalable application.

    I contributed across both frontend and backend in order to achieve my sprint goals.
    PHP 8 Angular Symfony
  • Manuel Fdez.
    Frontend Developer
    junio de 2024 - septiembre de 2024 (3 meses)
    I created an scalable frontend app architecture which is designed for managing generically api request states, modals, toasts and route permissions, visualizing PDF and rendering a generic view for lists and details. The project is tested, covered at 100%.

    That architecture was used to create two applications:
    • FacturApp: An invoice Facturae compliant generator
    • GestionGranjas: A farm animals manager. It’s designed to be used on daily work gathering inputs from a RFID reader in order to track different actions such as assist births, report casualties and apply healthcare treatment.
    React.js Clean Code Clean Architecture Domain Driven Design Typescript

Recomendaciones

Sé el primero en recomendar a Sergio

Ayuda a este freelance a destacar compartiendo tu experiencia.

Estos perfiles de freelance también coinciden con tus criterios

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

Formación

  • E.S.O. – I.E.S. Torrent
    de les Bruixes
    2008
    E.S.O. – I.E.S. Torrent
  • S.O.L.I.D. Course
    Codely.Tv
    2019
    S.O.L.I.D. Course

Conjunto de habilidades profesionales

Categorías