We are looking for a

Senior AI Product Engineer

to join a

product-focused technology team

in Barcelona. This is not a pure

AI/ML role . We are looking for a strong

end-to-end engineer

who can understand

real business problems , work directly with

users , challenge requirements, simplify complexity, and turn ideas into practical

products

that deliver measurable

impact . You will be involved across the

full product lifecycle : from understanding the problem and shaping the solution, to designing, building, iterating, and taking it to

production . You will work across

backend, frontend, APIs, databases, integrations, automation, and AI-enabled capabilities , using technologies such as

Python, TypeScript, React, FastAPI , and

LLM-based tools

where they genuinely add value. If you enjoy combining

product thinking, software engineering, business interaction, and applied AI , this could be a great fit. What you’ll do

Work directly with

business teams and end users

to understand their challenges, workflows, and real needs Translate

business requirements

into simple, effective, and scalable

digital products Design and build

end-to-end solutions

across

backend, frontend, APIs, databases, and system integrations Develop backend services using

Python

and frameworks such as

FastAPI, Django, or Flask Design and integrate

REST APIs

and connect solutions with

corporate systems

and internal platforms Automate

business processes

and repetitive workflows Apply

Generative AI

where it creates real value, including

LLMs, RAG, embeddings, semantic search, and AI agents Work iteratively with users, validating assumptions and continuously improving the product based on

feedback Take

ownership

of solutions from initial discovery through development, deployment, and





production support Make pragmatic technical decisions, balancing

speed, simplicity, scalability, and maintainability Identify when a

simple solution

is more effective than a complex architecture Collaborate with both

technical and non-technical stakeholders

throughout the product lifecycle Continuously explore new technologies and propose improvements where they can have a tangible

business impact Strong professional experience in

software engineering

and

end-to-end product development Strong proficiency in

Python Hands-on experience with

React Experience developing backend services with

FastAPI, Django, Flask , or similar frameworks Strong understanding of

REST APIs

and

system integration Experience working with

relational databases Experience integrating applications with

corporate systems

or third-party platforms Ability to work across both

backend and frontend

when needed Experience taking software solutions from

requirements to production Strong

product mindset

and ability to understand the

business problem

behind the technical request Confidence interacting directly with

business users

and

technical stakeholders Ability to

challenge, clarify, and simplify requirements High level of

autonomy, ownership, and decision-making capability Pragmatic

problem-solving mindset

and focus on

business impact Hands-on experience with

LLM-powered applications Experience with

Retrieval-Augmented Generation (RAG) Knowledge of

embeddings





and

vector databases Experience with

semantic search Experience building

AI agents

or

agentic workflows Experience automating

internal business processes Familiarity with

AI APIs

and modern

GenAI tooling Experience designing

UX for internal tools

or enterprise applications Experience building

AI-enabled products

rather than purely experimental prototypes Strong interest in

applied AI, automation, and emerging product technologies Hybrid model – 3 days onsite per week Why join this project?

People first – diverse and inclusive culture in an international environment. Build products that solve real business problems from end to end Combine software engineering, product thinking, and applied AI in the same role Work across backend, frontend, APIs, integrations, automation, and AI-enabled capabilities Have a direct impact on how problems are defined and how solutions are designed Take real ownership, from user discovery to production Work closely with business users and iterate quickly based on real feedback €1200 per year training budget and continuous learning opportunities. Private health insurance and benefits package Versátil working hours and hybrid model Wellhub: fitness, wellness, and mental health support Football and paddle tennis teams sponsored by Capitole Team buildings, global events, and strong tech communities We know that not every candidate will meet 100% of the requirements. If your profile doesn’t match perfectly but you believe you can add value, we’d still love to hear from you. Information Security Notice

The employee will have access to confidential information related to Capitole and the assigned project. Compliance with internal security and information protection policies is mandatory.

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📌 Senior AI Product Engineer (Madrid)
🏢 Capitole
📍 Madrid