Full Stack Engineer

hace 6 días

Barcelona, Barcelona, España MarsBased A tiempo completo

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

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 , React, and
  • 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

  • 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.

TECH SKILLS

  • 5+ years of production experience building and React applications.
  • Production experience with , 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 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.

BENEFITS

  • 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.

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

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