Freelance Junior Full Stack Developer – React / Node / TypeScript – Barcelona

Blu Selection; Barcelona; Híbrido; EUR 30.000 - 50.000; Jornada completa

Descripción de la vacante

A technology recruitment firm is seeking a Junior Full Stack Developer to support the development of a new web platform using modern JavaScript technologies. This is an exciting opportunity for someone with a strong foundation in front-end development who wants to grow in a high-performance environment. Responsibilities include developing React-based UI components, implementing new features, and integrating APIs. A hybrid work setup is offered from Barcelona, along with a competitive daily rate.

Formación

• 2+ years of experience in front-end or full-stack development.
• Solid experience with React (hooks, components, state).
• Good knowledge of JavaScript and TypeScript.
• Basic experience with Node.js or Python (FastAPI, Django is a plus).
• Understanding of REST APIs and client–server communication.

Responsabilidades

• Develop and maintain React-based UI components.
• Implement new features in collaboration with seniors and the Tech Lead.
• Integrate and consume REST APIs.
• Write clean, maintainable, reusable code.
• Fix bugs and improve existing functionality.

Conocimientos

Front-end development

React

JavaScript

TypeScript

Node.js

Cross-functional collaboration

Git/GitHub

Herramientas

Confluence

Docker

Descripción del empleo

We are looking for aJunior Full Stack Developer to join our team and support the development of a new web platform built with modern JavaScript technologies.
You will work closely with Senior Developers, the Tech Lead, the Product Owner, and the UX Designer to implement new features, build UI components, integrate APIs, and contribute to the overall technical quality of the product.

This role is ideal for someone with a strong foundation in front-end development who wants to grow quickly within a high-performance environment.

Responsibilities

• Develop and maintain React-based UI components

• Implement new features in collaboration with seniors and the Tech Lead

• Integrate and consume REST APIs

• Write clean, maintainable, reusable code

• Fix bugs and improve existing functionality

• Support the development of a reusable component library

• Write unit tests and contribute to quality assurance

• Document code and technical decisions (Confluence)

• Participate in Agile rituals (daily, grooming, planning)

Required Qualifications

• 2+ years of experience in front-end or full-stack development

• Solid experience with React (hooks, components, state)

• Good knowledge of JavaScript and TypeScript

• Basic experience with Node.js or Python (FastAPI, Django is a plus)

• Understanding of REST APIs and client–server communication

• Familiar with Git/GitHub and modern development workflows

• Ability to collaborate within a cross-functional team

• Good communication skills in English

Nice to Have

• Experience with Next.js

• Experience with testing (Jest, Testing Library)

• Understanding of component libraries or design systems

• Docker or containerization basics

• Experience in data-heavy or content-driven platforms

What We Offer

• Full-time freelance mission

• Fixed daily rate: €375/day

• 3-month contract, extendable based on project needs

• Hybrid setup from Barcelona (office + remote mix)

• Work closely with senior engineers and a strong product team