MarsBased is a development agency from Barcelona specialising in AI-augmented software development. We don’t just use AI; we are actively rewriting the rules of modern engineering. By combining elite human expertise with advanced agentic workflows, we build end-to-end web and mobile applications faster, smarter, and to a higher standard than ever before.

We are a boutique agency, not a factory. We believe in remote work, radical transparency, scalable architecture, and partnering with clients who respect our craft, our time, and our standards. ?

Why This Role Matters
The way software is built is undergoing a generational shift. We aren’t waiting to see how it plays out, we are leading the transition.

We are looking for a Senior Full Stack Engineer who doesn't just use AI tools, but thinks in AI-native workflows. Because you have a deep, foundational understanding of the entire software development lifecycle, from Clean Architecture to DevOps, you know exactly what great software looks like. You will use that expertise to orchestrate AI agents to build elegant, robust,



and maintainable systems.

We need engineers who can leverage AI precisely because they understand what good software looks like end to end.

You'll be joining a small, senior, and highly-collaborative team that values autonomy, quality, and transparency. We build things the right way. ?

Your Mission
Architect & Build: Develop modern and scalable web applications.
Orchestrate AI Ecosystems: Design multi-agent workflows and architectures for complex tasks like autonomous testing, refactoring, and code review.
Set the Standards: Define prompting strategies and context management patterns that make AI-assisted development reliable, elite, and repeatable.
Drive Innovation: Help evolve our internal tooling, workflows, and development culture around AI-augmented engineering.
Collaborate Globally: Partner closely with forward-thinking clients and teammates in a mature, remote-first environment.

Soft Skil

📌 Full Stack TypeScript Engineer (España)
🏢 Marsbased
📍 España