Machine Learning Engineer (Personalization)

Requirements

• 3+ years of industry experience applying machine learning methods, with a strong focus on recommender systems, search, ranking, or personalization
• Strong proficiency in Python for production ML systems
• Experience with A/B testing and experimentation frameworks to measure model impact
• Familiarity with cloud platforms (AWS, GCP, or Azure) and containerized environments
• Familiarity with SQL and NoSQL databases
• Degree in computer science, machine learning, statistics, or equivalent work experience

What the job involves

• We are looking for a Senior Machine Learning Engineer to join our Personalization team in Barcelona
• You will design and build systems that deliver highly relevant, personalized experiences across our digital products
• This role sits at the intersection of backend engineering, data, and applied AI—leveraging modern architectures and machine l...