AI Engineer

haddock (YC W22); Barcelona; Presencial; EUR 60.000 - 80.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Competitive salary

Bright modern office

Subsidized Urban Sports Club membership

Access to AI tooling

Descripción de la vacante

A leading AI solutions provider in Barcelona is seeking an AI Engineer to develop and automate internal processes using AI. The ideal candidate will have a strong background in AI technologies and a passion for problem-solving. You will work closely with leadership to drive automation and streamline operations. This role offers competitive salary, flexible work environment with a collaborative team, and the opportunity to contribute to meaningful projects that transform the industry.

Formación

• Hands-on experience with Large Language Models (LLMs) or generative AI systems.
• Passionate about working at the frontier of AI.
• Up to date with modern AI-powered dev tools.

Responsabilidades

• Architect and develop internal AI agents.
• Collaborate with leadership to automate operational loops.
• Instrument and optimize data flows for decision-making.

Conocimientos

Large Language Models (LLMs)

Generative AI Systems

Engineering Rigor

Fluency in Spanish

Product Thinking

Educación

Bachelor’s degree in Mathematics, Data Science, Computer Science, Machine Learning or related field

Herramientas

TypeScript

Python

React

PostgreSQL

MongoDB

Descripción del empleo

Who are we?

haddock is the market leader solution for point of control in restaurants, handling all back‑office vital operations like product management, inventories, purchases, price tracking, document conciliation, bank conciliation, paychecks, clocking in/out, P&L reports, etc.

Not only do we have a system of record that helps operate restaurants with control and clarity, but we're also the leaders in offering AI workforce, starting with Fina. They work 24/7 doing the heavy, tedious work that our customers don't have time to do well.

This is no AI hype. Our customers obtain visible value from our AI Agents, both in money and time saved. We're becoming strategic partners in the design of their businesses.

Our mission is to empower millions of restaurateurs to level up their business.

Our vision is to lead the market through innovation, strong relationships and by becoming the go‑to tech partner for restaurant success.

haddock is backed by Y Combinator, the accelerator behind Airbnb and Twitch. We're growing fast with support from top‑tier investors like JME, Decelera, Extension Fund, Wayra, and Zone2Boost.

Why are we hiring?

We’re hiring because our ambitions are increasing: more customers, more AI automation, more product surface, more value and quality, and more internal tooling to support our growth.

Our engineers don’t wait for a project to be defined. They create momentum, propose ideas, and are a key part of the growth of the company.

We’re growing very fast, which means hundreds of internal processes, dashboards, and decisions every week that can (and should) be automated, from simple deterministic workflows to AI agents that get the job done.

That’s where you come in: an AI Engineer who loves solving complex operational challenges by designing, building, and deploying AI systems that think, act, and automate intelligently.

About Engineers at haddock

Engineers at haddock are action‑oriented, curious, autonomous, and take full ownership of their work.

They are champions of figuring out the unknowns. They talk to customers, deliver quality work, improve our internal tooling, and are ambitious. We look for people with these same motivations and ways of working.

We strongly adhere to the Lean Startup and Agile principles, favoring action over analysis, imperfect iteration over perfect delivery, face‑to‑face communication, and a fast‑paced environment.

Why is this role so special?

Your focus and ownership will be to help haddock grow as fast as possible. No distractions, your mission is to make every part of the company as AI automated as possible.

You’ll have full freedom to experiment, time and resources to stay at the cutting edge of AI, and the support of a strong AI, tech and product team around you.

What You'll Do

• Architect and develop internal AI agents that streamline finance, CX, sales and marketing teams.
• Collaborate closely with leadership to identify and fully automate high‑leverage operational loops.
• Think ahead: Architect scalable solutions as we grow fast.
• Improve process: Help us move from scrappy to smart.
• Instrument and optimize data flows across Notion, HubSpot, Stripe, and our internal DBs for decision‑making.
• Be an internal evangelist for applied AI, helping every haddocker become 10× more productive.

What You Need to Bring

• Bachelor’s degree or equivalent experience in Mathematics, Data Science, Computer Science, Machine Learning, or a related field.
• Hands‑on experience with Large Language Models (LLMs) or generative AI systems in real‑world use cases.
• You’re truly AI‑native: you’re passionate about working at the frontier of AI, you actively follow new papers, models, and techniques, and you continuously refine how you use them in practice.
• You’re also AI‑native in how you build software: you’re up to date with modern AI‑powered dev tools (e.g. Claude Code, Cursor, Codex or similar), and you assemble your own agents and workflows to move faster as an engineer.
• You combine engineering rigor with product thinking: you don’t just write code, you design, debug, and improve end‑to‑end systems that solve real problems.
• Fluency in Spanish and comfort in English. We tend to speak Spanish at the office and in Slack, and write documentation and projects in English.

You’ll stand out if you have

• Experience with AI observability platforms such as Langfuse (tracing, metrics, evaluations for LLM apps and agents).
• Experience collaborating with cross‑functional teams such as including Sales and CX.
• Experience designing or working with MCPs.
• Experience building with voice models.
• Experience designing and running evaluations.
• Experience designing and operating RAG systems and working with vector databases.

Our Tech Stack

TypeScript, Python, React, React Router, Fastify, PostgreSQL, MongoDB, Google Cloud Platform, Langfuse, PostHog and several AI providers.

Why Join Us?

We’re building something ambitious, and we’re looking for someone ready to grow with us, take real ownership, and shape the company’s future.

This is more than a job. It’s a chance to leave your mark on an industry that’s ripe for transformation. Our best perk is honestly our work environment and the opportunities you'll get to learn and grow at haddock.

What we offer

• 💸 A competitive salary, that will increase as haddock and you grow.
• 🏢 A bright modern office in Barcelona, in Poblenou. Probably the best office you've ever worked at.
• We currently spend at least 2 days per week at the office, because we believe that in‑person frequent interaction helps us communicate better, gain trust with each other faster, and achieve better outcomes. The other 3 days, we usually work from home to have more focus and get things done.
• 🪄 All AI tooling that you wish to experiment with.
• 🧘 A subsidized Urban Sports Club membership: yoga, HIIT, hot studios.
• 💰 Enjoy benefits when spending part of your salary, thanks to Playflow.

Our Hiring Process

We move fast and communicate openly. Our goal is to wrap up the process within a week. Here’s what to expect:

• Intro call with Enric (AI Lead), 25 mins.
• Call with Pol (co‑founder, CPO), 25 mins.
• Technical interviews with Enric and Guillermo (Head of Tech) (2 hours).

Sounds like an opportunity? Apply now. We’d love to meet you.

Important: applications must include a personalized message or cover letter to be considered.