Capitole keeps growing — and we want to do it with you
We're looking for an AI/ML Engineer 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 .
- 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).
- An individual training budget of €1,200 for whatever you choose: events, books, certifications or courses.
- Monthly check-ins with your team for

📌 Machine Learning Engineer (Cataluña)
🏢 Capitole
📍 Cataluña