Machine Learning Engineer, Personalization, Samba

About the Role

The Personalization team makes deciding what to play next easier and more enjoyable for every listener. Samba sits at the heart of Spotify's personalization engine, powering experiences like autoplay, radio, and personalized mixes. We work on complex sequencing and optimization problems—balancing what users love with how Spotify supports creators and the business.

Our team blends machine learning, backend engineering, and data expertise, and collaborates across North America and Europe to deliver impactful, real-time personalization at scale.

What You'll Do

• Design and build machine learning systems that optimize ranking and sequencing across personalized surfaces
• Develop multi-objective optimization strategies that balance user satisfaction with business outcomes
• Collaborate closely with cross-functional partners including product, data science, and engineering teams to align on goals, share context, and deliver impactful solutions
• Work across ML, backend, and data layers to bring models into production
• Contribute to scalable infrastructure supporting high-volume user interactions
• Run experiments and use insights to continuously improve performance
• Help shape technical direction