Machine Learning Engineer

Machine Learning Engineer (Product) – Fixed-Term Contract

Location: Zaragoza (Hybrid)

Contract: Fixed-term until June 2026

We’re looking for a Machine Learning Engineer to join a leading European deep-tech company at the cutting edge of AI innovation. This is a chance to make real impact on next-generation large language model (LLM) solutions that are redefining how AI is built, optimized, and deployed.

What You’ll Do

• Build, optimize, and scale data pipelines for LLM training and fine-tuning.
• Develop techniques for data sourcing, cleaning, validation, and enhancement.
• Work cross-functionally with ML engineers and researchers to deliver production-ready, high-performance models.
• Implement and test advanced compression and optimization methods for AI models.
• Stay ahead of trends in LLM architectures, evaluation, and dataset curation.

What You’ll Bring

• Master’s or PhD in Computer Science, AI, Data Science, or related field — or equivalent experience.
• 4+ years of hands-on experience in ML or NLP (especially with LLMs).
• Strong Python skills and familiarity with libraries such as Hugging Face, Pandas, and NumPy.
• Experience managing large-scale datasets and distributed computing environments.
• Collaborative mindset and solid understanding of modern ML development practices.

What’s on Offer

• Competitive salary (from €40,000 per annum).
• Fixed-term contract until June 2026 with signing and completion bonuses.
• Hybrid working model – flexible hours with regular on-site collaboration.
• Opportunity to work on cutting-edge AI technology within a fast-scaling, international environment.

This role offers a unique opportunity to work on impactful AI engineering projects while enjoying flexibility, collaboration, and exposure to world-class research and development.