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
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.
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Location
Barcelona, Spain
Compensation
€40k to €80k + Equity
Company
Papayadash
Role overview
Software
Papaya Technologies Ltd, operating under papayadash.com, is a London-based company focused on providing a comprehensive digital platform for fleet management, with an emphasis on the electrification of commercial vehicle fleets in Europe. The platform enables businesses operating vehicle fleets to manage and automate fleet workflows, communicate with partners, and gain real-time operational insights. Papaya's unified solution streamlines the sourcing, running, and maintenance of electric vehicles, connects fleet operators with a marketplace of service providers, and facilitates sustainable, zero-carbon logistics by improving efficiency and reducing emissions associated with last-mile logistics and transportation.
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 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 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.
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.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
Meet Jack
What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and Papayadash wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.