Python backend engineer

We are looking for a Python backend engineer to join our Martian team. 100% Remote MarsBased is a boutique development consultancy based in Barcelona, focused on delivering high-quality, end-to-end web and mobile applications. We build solutions primarily using Ruby on Rails, React, and JavaScript, and strongly believe in remote work, clean code, and quality over quantity :cohete: We’re looking for a Backend Engineer with solid experience in Python to join our Martian crew. At MarsBased, you’ll work with a small, senior, and highly collaborative team that values autonomy, transparency, and craftsmanship. We care about doing things the right way, with clean architectures, thoughtful design, and deep, focused work (not endless meetings). If you love elegant code, solving real problems, and being part of a kind, experienced, and fully remote team, your next orbit might just be with us.

What you’ll do

• Build and maintain modern, scalable web applications using Python, including other technologies, frameworks, and tools.
• 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

• Clear and professional written and verbal communication with internal teams and clients/stakeholders.
• Enthusiastic and positive approach to new challenges; ability to quickly assimilate new information and processes.
• Ability to work independently, demonstrate strong self-management skills in a remote environment, and take ownership of projects.
• Excellent attention to detail and commitment to high-quality output.
• Proactive & able to work alone on projects managed by you.
• Fluency (written and spoken) in English and/or Spanish, with proficiency in both being strongly preferred.

Technical Skills

• At least 5 years of production experience building Python applications.
• Experience with industry-leading Python frameworks like Django,...