We're looking for aFull Stack Engineerfor one of our clients who enjoys building new products from the ground up and is eager to help shape AI tooling for the mobility industry.Work across the full stack to solve complex problems using incomplete and messy dataDesign and evolve canonical data modelsBuild pipelines to handle real-world data inputsDefine and implement methods to resolve conflicting dataBuild and orchestrate agents that reason over data and take actionDesign agent behavior, including failure and recovery processesCreate outputs that are explainable and auditableShip features from idea through to productionHelp shape product direction, not just implement technical decisionsStrong full-stack engineering skills (tech stack experience is adaptable)Comfortable working with ambiguity and messy,



inconsistent dataAbility to take problems from concept to shipped solutionProduct-oriented mindset, focused on delivering outcomesOpen to forming and revising strong opinions as the project evolvesDemonstrated ability to think creatively and critically about what you buildRuby on Rails (API)React / Next.JsPython (data and AI orchestration)Competitive salary: €40,000 to €80,000Meaningful equityFlexible working (3 days in office)Barcelona HQ with beachfront locationGenerous holiday allowance plus public holidaysTeam off-sites in exciting locations

📌 Full Stack Engineer - Product Vision (40k€-80k€) (Barcelona)
🏢 Joppy
📍 Barcelona