? Capitole keeps growing — and we want to do it with you

? We're looking for an Machine Learning Engineer #MLE to join a general leader in HR technology, a team building Generative AI assistants used across global markets.

This is a hands-on engineering role, where focus is shipping GenAI/NLP models to production in Python, working shoulder-to-shoulder with MLEs inside a lean 5–6 person squad across 3–4 projects. If you code your ML solutions yourself rather than leaning on out-of-the-box AutoML tools, and you like owning the technical solution end-to-end, this is for you.

? What you'll find here:
• Building production-ready GenAI/LLM features (chatbot assistants and NLP systems, from prototype to production).
• Writing structured, quality Python with real engineering discipline: PR practices, Git, CI/CD, Docker.
• Designing end-to-end NLP pipelines (data processing, model development, evaluation, deployment).
• Getting hands-on with LLMs, embeddings and modern GenAI tooling (OpenAI, AWS Bedrock).

? We're looking for someone who:




• Brings 3–5 years of experience building production features/systems with AI/ML.
• Writes advanced, production-grade Python — not notebook scripting.
• Has worked on real NLP / GenAI / LLM projects and can explain them in depth (embeddings, evaluation metrics beyond accuracy, how they assessed system performance).
• Thinks like an ML engineer: moves models to production, understands the full pipeline, applies solid coding practices (Git, PR, CI/CD, Docker).
• Knows their way around ML libraries (scikit-learn, PyTorch) and data processing (pandas).

✅ Nice to have:
• Experience with Databricks.
• Familiarity with AWS infrastructure (S3, Lambda, Bedrock).
• Understanding of data augmentation, bias and training pipelines.
• A Software Engineering background with a recent move into AI/ML.

? Location: Barcelona. (Hybrid: 1–2 days in the office).
?️ Language: English C1 (Fluent, all team communication is in English).

? Why CAPITOLE?
• An in

📌 Machine Learning Engineer (España)
🏢 Capitole
📍 España