Full Stack Engineer - EU (Barcelona Relocation)

Papayadash; Barcelona; Presencial; EUR 40.000 - 80.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Competitive salary of €40,000 to €80,000

Meaningful equity

Apple hardware

Located in Barcelona HQ in front of the beach

Generous holiday + public holidays

Team off‑site in fun places!

Descripción de la vacante

Papayadash is seeking a product-focused engineer to help build the intelligence layer for vehicle fleets in Barcelona. You will be responsible for designing data models, building pipelines, and orchestrating agents that process complex real-world data.

This role blends engineering and product development, with a competitive salary ranging from €40,000 to €80,000 and meaningful equity options. You'll enjoy working in a dynamic team environment with generous holidays and fun off-site activities!

Formación

• Strong full‑stack ability (stack doesn’t matter).
• Comfortable with ambiguity and messy data.
• Able to take problems from idea to shipped solution.
• Product mindset: focused on outcomes, not just code.
• Strong opinions, loosely held.

Responsabilidades

• Design and evolve the canonical data model.
• Build pipelines that handle messy, real-world inputs.
• Define how the system resolves conflicting data.
• Build and orchestrate agents that reason over the data.
• Design how those agents behave and recover.
• Ship features end-to-end, from idea to production.

Conocimientos

Strong full‑stack ability

Comfortable with ambiguity and messy data

Able to take problems from idea to shipped solution

Product mindset: focused on outcomes

Strong opinions, loosely held

Descripción del empleo

Papaya is building the intelligence layer for vehicle fleets.

Fleets spend billions every year, but most of that spend is poorly understood. Data is fragmented across leasing providers, fuel, maintenance, telematics, and charging. There’s no single source of truth. Costs don’t reconcile. Decisions are reactive. Even large organisations struggle to answer simple questions:

• What are we actually spending?
• Where are we overspending, and why?
• Are we being charged correctly?

This has always been a hard problem. What’s changed is that it’s now solvable. We have real customers, real fleet data, and a clear industry need. At the same time, the AI tooling needed to make sense of this data is just becoming viable. The next generation of fleet software won’t just store information. It will understand what is happening, explain why it matters, and help teams act.

What we’re building

Papaya turns messy fleet data into something companies can trust and act on.

At the core, we:

• Ingest real-world data (often CSVs, not clean APIs)
• Standardise it into a single, consistent model
• Provide a clear, explainable view of total cost of ownership

But the goal isn’t just visibility. It’s action. We’re building systems that operate directly on the data and take on real workflows:

• Reconciling discrepancies across suppliers when numbers don’t match
• Investigating billing issues and drafting dispute cases
• Detecting anomalies across thousands of vehicles
• Enforcing policy and contract compliance

A big part of this is building and orchestrating agents that can do this work reliably and that our customers can trust. You’ll work across the full stack on problems where data is incomplete, inconsistent, and sometimes wrong.

Typical work includes

• Designing and evolving the canonical data model
• Building pipelines that handle messy, real-world inputs
• Defining how the system resolves conflicting data
• Building and orchestrating agents that reason over the data and take action
• Designing how those agents behave, fail, and recover
• Making outputs explainable and auditable (not just “LLM says so”)
• Shipping features end-to-end, from idea to production

About the role

This is as much a product role as it is engineering. You won’t just implement decisions, you’ll shape how the system behaves.

Benefits

• Competitive salary of €40,000 to €80,000
• Meaningful equity
• Apple hardware
• Barcelona HQ in front of the beach (Norrsken House)
• Generous holiday + public holidays
• Team off‑site in fun places! (We've been to Girona, Lisbon and Wales so far)

Qualifications

• Strong full‑stack ability (stack doesn’t matter)
• Comfortable with ambiguity and messy data
• Able to take problems from idea to shipped solution
• Product mindset: focused on outcomes, not just code
• Strong opinions, loosely held

Location

This role is based in Barcelona. We’re open to candidates relocating from elsewhere in Europe and can support the move for the right person.