You will build the intelligence layer for vehicle fleets, turning fragmented data from fuel, leasing, and maintenance providers into a unified source of truth. As a core engineer, you will architect data models and deploy AI agents that automate financial reconciliation and anomaly detection for fleets managing thousands of vehicles across Europe.
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Senior Fullstack Engineer at Papayadash
Join a $7M Seed-funded startup backed by Seedcamp, 20VC, and Giant Ventures as they build the intelligence layer for global vehicle fleets. Based in a beachside Barcelona HQ, you'll tackle the complex challenge of turning fragmented, messy fleet data into actionable financial insights using AI orchestration. This is a rare 0→1 opportunity for a builder who wants to own product decisions end-to-end and deploy agents that solve high-stakes operational problems for massive commercial organizations. If you thrive in high-growth environments and want to shape the future of mobility infrastructure, this is the role for you.
About this role
Role overview
About the company
Papayadash
Software
$7M Seed mobility startup backed by Seedcamp, 20VC, and Giant Ventures
What you'll do
What you will do
- Design and evolve a canonical data model capable of standardizing messy, inconsistent real-world inputs like CSVs and fragmented supplier APIs.
- Build and orchestrate AI agents that reason over fleet data to automatically detect billing discrepancies and draft dispute cases for customers.
- Own the product lifecycle end-to-end, shipping features across a stack including Ruby on Rails, React/Next.js, and Python for data orchestration.
Who you are
Who this is a fit for
- Proven experience building 0→1 products from scratch, with a strong ability to navigate technical ambiguity and unstructured data environments.
- Full-stack proficiency with modern web frameworks; while our stack is Rails/React/Python, we value generalist engineering excellence and outcome-focused shipping.
- A product-first mindset with the judgment to prioritize speed and customer impact over architectural perfection in a fast-paced startup setting.
Why this role
Why this role is remarkable
- Join an elite, technical team backed by top-tier investors including Seedcamp, 20VC, and AlbionVC in a high-impact $7M Seed round.
- Work at the intersection of mobility and AI, building sophisticated agents that solve complex, real-world financial problems for massive commercial fleets.
- Enjoy a high-quality lifestyle with a beachside office at Norrsken House in Barcelona, featuring regular team off-sites to locations like Lisbon and Girona.
Jack & Jill
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
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