People first – diverse and inclusive culture in an international environment .
Work on high-impact Data & Insights initiatives across business performance , operations , finance , and commercial domains .
Help shape how data supports strategic decision-making across a large international organisation .
Explore the evolution of AI-driven analytics , productivity tools , and data discoverability .
Contribute to self-service analytics , data products , and scalable reporting practices .
Work closely with business and senior stakeholders , turning complex data into meaningful insights .
High team stability and collaborative culture .
€1200 per year training budget and continuous learning opportunities
Private health insurance and benefits package
Flexible working hours and hybrid model
Wellhub: fitness, wellness, and mental health support
Football and paddle tennis teams sponsored by Capitole
Team buildings, integral events, and strong tech communities
About the role




We are looking for an AI Engineer specialised in Prompt Engineering to join a dynamic AI team within an international technology environment.
In this role, you will design and optimise advanced prompts for Large Language Models and apply Generative AI to automate and improve different tasks across the software development lifecycle.
You will work with models such as GPT, Claude, Gemini, and LLaMA, applying advanced prompting techniques, prompt templating, optimisation, evaluation, and benchmarking.
If you enjoy working with LLMs, Prompt Engineering, and AI-powered software development, this could be a great fit.
What you'll do
Design and optimise advanced prompts for Large Language Models such as GPT, Claude, Gemini, and LLaMA.
Apply advanced prompting techniques, including Chain-of-Thought Prompting, Few-Shot Prompting, Retrieval-Augmented Generation (RAG), Tool Use, and Function Calling.
Develop prompt templates and optimise prompts iteratively based on evaluation and benchmarking.
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📌 AI Engineer Prompt Engineering (Barcelona)
🏢 Capitole
📍 Barcelona