Senior React Frontend Engineer - 6-Month Contract (Hybrid)

Thrive IT Systems; Barcelona; Hybrid; EUR 45,000 - 70,000; Full time

Job summary

Thrive IT Systems is seeking a Senior Frontend Engineer to build the user interface for our project using React. You will develop high quality features, collaborate with the team to solve problems, and contribute to frontend excellence.

The role requires React 18, semantic HTML, scalable CSS, and modern tooling. This is a fixed-term 6-month contract with hybrid work: 2 days per week in the Barcelona office.

Qualifications

• Expert knowledge of ReactJS (React 18) and hooks.
• Semantic HTML and accessible markup.
• CSS with scalable systems and vanilla CSS.
• Experience with modern frontend tooling (Webpack, Babel, NPM).
• Version control with Git and GitHub.
• Experience with CSS-in-JS and component libraries.
• Familiarity with Storybook and design systems.
• Understanding micro frontend architectures.

Responsibilities

• Develop, test, and maintain high quality features using React.
• Write clean, maintainable, well-tested code.
• Collaborate closely with the Lead Frontend Engineers, backend engineers, and designers.
• Participate in code reviews and set best practices.
• Contribute to the frontend lifecycle from design to deployment.

Skills

React 18

HTML semantic

CSS system

Webpack

Babel

NPM

Git/GitHub

CSS-in-JS

Storybook

Micro frontend

Tools

Webpack

Babel

NPM

GitHub

Job description

Thrive IT Systems is seeking a Senior Frontend Engineer to build the user interface for our project using React. You will develop high quality features, collaborate with the team to solve problems, and contribute to frontend excellence.

The role requires React 18, semantic HTML, scalable CSS, and modern tooling. This is a fixed-term 6-month contract with hybrid work: 2 days per week in the Barcelona office.