Jobs in Cadiz, Italia

MarsBased is a development agency from Barcelona offering end‑to‑end web & mobile apps built with Ruby on Rails , React and JavaScript . We believe in remote work , clean code , and delivering quality over quantity 🚀

We’re looking for a senior full-stack engineer to join our Martian team, with strong knowledge of Node.js and React .

You’ll be joining a small, senior, and highly-collaborative team that values autonomy , quality , and transparency . We build things the right way. We believe in doing deep, focused work — not meetings all day.

If you love elegant code, solving complex problems, and being part of a kind and experienced remote team, this might be your next orbit.

• Build and maintain modern, scalable web applications using Node.js, React, and Next.js.
• Collaborate closely with clients and teammates in a friendly, remote-first environment.
• Contribute to architecture decisions and ensure clean, maintainable codebases.
• Use AI-assisted coding tools to improve development speed and quality.
• Help us refine our internal tools, workflows, and development culture.

• Excellent communication with clients and teammates.
• Strong self-management skills for remote work.
• High attention to detail.
• Positive attitude towards new challenges and a fast learner.
• Proactive and able to work independently on self-managed projects.
• Experience using AI agents or AI code editors to assist in coding tasks.
• Fluent in written and spoken Spanish.
• Fluent in written and spoken English.

• 5+ years of production experience building Node.js and React applications.
• Production experience with Next.js, the App Router, and Server Components is required.
• Experience with React Router or Remix (nice to have).
• Strong JavaScript and TypeScript knowledge, both frontend and backend.
• Solid understanding of relational databases and SQL.
• Production experience deploying and maintaining Node.js applications.
• Familiar with Docker and containers in both development and production environments.
• Experience with testing frameworks such as Jest or Cypress.
• Ability to build scalable and maintainable software over time.
• Strong writing and documentation skills, we value clarity in your code and solutions.

• Competitive salary.
• Work from home or from a coworking space.
• Flexible working hours.
• Amazing coworkers.
• Modern tech stack and methodologies.
• Transparency and quality-oriented culture.
• Company activities.

We’re a boutique agency, not a factory. We work with clients who respect our time, process, and craftsmanship. You’ll be part of a senior team where your voice matters and your work has a real impact.

Join us and help us build software that lasts — from Mars, or anywhere you call home ❤️