Summary

Senior machine learning engineer role at Spotify focused on messaging optimization across push, email, and in-app channels, using pytorch, ray, reinforcement learning, and experimentation. The role is based in London and Stockholm with some in-person meetings and flexibility to work from home.

Responsibilities

• Design and ship messaging optimization models
• Plan and run multi-objective a/b experiments
• Contribute to reinforcement learning optimization systems
• Own model data deployment and monitoring lifecycle
• Integrate models with upstream messaging systems
• Analyze outcomes using causal inference methods
• Define success metrics with cross-functional partners