Machine Learning Engineer (LLM)

Technical · San Sebastian, Spain, Barcelona, Madrid, Zaragoza

Multiverse Computing is a rapidly growing deep-tech company founded in 2019. We are one of the largest quantum software companies in the EU, recognized by CB Insights as one of the 100 most promising AI companies in the world.

With 180+ employees worldwide, our multicultural and international team develops advanced quantum and AI solutions to tackle complex challenges across finance, energy, manufacturing, telecoms, and beyond.

Our mission is to empower organizations to achieve significant competitive advantage through cutting-edge quantum computing and AI technologies.

About the Role

We are seeking a Machine Learning Engineer specializing in Large Language Models to join our AI team. This role offers the opportunity to work on cutting-edge LLM projects and contribute to our AI product development.

Responsibilities

• Develop and implement machine learning models with focus on LLMs

• Participate in model training, fine-tuning, and optimization

• Collaborate with senior researchers and engineers on AI projects

• Write production-ready ML code and contribute to model deployment

• Conduct experiments and document findings

• Participate in code reviews and knowledge sharing

• Support model evaluation and benchmarking activities

What we are looking for:

• 2-4 years of professional experience in machine learning or AI

• Strong proficiency in Python and ML frameworks (PyTorch, TensorFlow)

• Understanding of LLM architectures and transformer models

• Experience with NLP or large language models

• Familiarity with ML best practices and version control (Git)

• Excellent communication skills in English

• Bachelor's degree in Computer Science, Mathematics, or equivalent

• Experience with distributed training or cloud ML platforms is a plus

What we offer:

• Competitive salary (€40,000 - €60,000 annually based on experience)

• Stock options in a well-funded deep-tech company

• Flexible work arrangements (hybrid model, multiple Spanish offices)

• Professional development budget and training opportunities

• Health insurance and retirement benefits

• International, collaborative team environment

• Direct impact on cutting-edge LLM and quantum computing innovation

If you're passionate about machine learning and LLMs, we'd love to hear from you.