Full Stack Engineer – Build AI tooling for mobility

About the role

We are seeking a Full Stack Engineer to help shape AI tooling for the mobility industry, building new products from the ground up and influencing product direction.

Key responsibilities

• Work across the full stack to solve complex problems using incomplete and messy data.
• Design and evolve canonical data models and build pipelines for real‑world data inputs.
• Define and implement methods to resolve conflicting data.
• Build and orchestrate agents that reason over data, take action, and handle failure and recovery.
• Create explainable and auditable outputs.
• Ship features from idea through to production.
• Contribute to product direction beyond pure implementation.

Required profile

• Strong full‑stack engineering background with flexibility on tech stack.
• Comfortable working with ambiguity and messy, inconsistent data.
• Ability to take problems from concept to shipped solution.
• Product‑oriented mindset focused on delivering outcomes.
• Willingness to form and revise strong opinions as the project evolves.
• Creative and critical thinking about what you build.

Required skills

• Ruby on Rails (API)
• PostgreSQL
• React / Next.js
• Python (data and AI orchestration)
• AWS
• Render

What we offer

• Competitive salary €40,000–€80,000 per year.
• Meaningful equity.
• Flexible hybrid working (3 days in office).
• Apple hardware.
• Barcelona headquarters with beachfront location.
• Generous holiday allowance plus public holidays.
• Team off‑sites in exciting locations.