Full Stack Engineer

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.

WHAT YOU'LL DO

• 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.

GENERAL SKILLS

TECH SKILLS

BENEFITS

WHY MARSBASED

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