Your mission will be to develop AI/NLP models and libraries to support the intelligent services and agents we are building.

What do we offer?

• Be part of an innovative project where your work will have a direct positive impact.
• Join a leading engineering team that is diverse and fosters a great working environment.
• 100% remote work from anywhere in Spain, with the option to work from a co-working space in Madrid or Vigo.
• Off-sites and team-building events.
• Flexible working hours.
• Competitive salary aligned with the global market for a principal engineer (higher level of seniority).

Requirements:

• Proficient in Python programming with over 7 years of experience.
• Backend software engineering and MLOps expertise.
• In-depth knowledge of machine learning techniques, algorithms, and natural language processing (NLP).
• Skilled in data science libraries and frameworks such as Numpy, pandas (or accelerated alternatives, cuDF, polars), torch, scikit-learn.
• Expertise in NLP and deep learning frameworks for LLMs (Transformers library, PEFT, TRL...)
• 3+ years of experience using NLP models like BERT, GPT, and Sentence-BERT for vector search.
• Skilled in training and fine-tuning ML models (including LLMs) and creating evaluation frameworks linking metrics to business impact.
• Experienced in working with short development cycles.
• Collaborative mindset, working closely with product architecture teams to integrate research and development into products.

Bonus points:

• Hands-on experience with RAG pipelines (Langchain, Llamaindex or related) and vector databases (Qdrant, pgvector, open search or related).
• Expertise in designing and implementing with vector databases (Qdrant, ElasticSearch, FAISS, etc.).
• Hands-on experience with agentic and workflow-based frameworks, such as LangGraph, Google ADK or smolagents. MCP client-server protocol.

Are you ready to take on this challenge?