Fullstack Developer – Node.js & React (Remote, Spain)

About the role

We are looking for a Fullstack Developer with strong Node.js and React expertise to join a fully remote, collaborative team serving millions of users across international markets. The role involves designing, building, and maintaining modern web applications that scale globally.

Key responsibilities

• Develop and maintain full‑stack web applications using Node.js, Express.js, React and related technologies.
• Build scalable backend services and APIs, ensuring performance, reliability and maintainability.
• Create responsive, user‑friendly front‑end interfaces.
• Participate in architectural discussions, contributing to micro‑services and service‑oriented designs.
• Write clean, well‑documented code and implement automated testing.
• Support API design, documentation, integration and optimisation.
• Work with containerised deployment pipelines and continuous‑improvement initiatives.
• Share knowledge and mentor peers to uphold engineering standards.

Required profile

• Strong professional experience with modern JavaScript (ES6+).
• Hands‑on experience building backend applications with Node.js and Express.js.
• Proven ability to develop modern front‑end applications using React.
• Full‑stack mindset comfortable working across both front‑end and back‑end.
• Experience with MongoDB data modelling and Elasticsearch for search and analytics.
• Familiarity with testing frameworks such as Jest, Mocha or Jasmine.
• Understanding of micro‑services and service‑oriented architectures.

Required skills

• JavaScript (ES6+)
• Node.js
• Express.js
• React
• MongoDB
• Elasticsearch
• Jest
• Mocha
• Jasmine
• Micro‑services architecture
• API design and documentation