Senior Machine Learning Engineer, Personalization, Magenta

Spotify is a leading audio streaming service, known for its innovative features like Discover Weekly. They are seeking a Senior Machine Learning Engineer to design and implement advanced machine learning systems that enhance user interaction through conversational AI and personalized recommendations.

Responsibilities:

• Design and ship production-grade machine learning systems powering conversational and agentic AI experiences
• Build systems that interpret user intent, manage context across multi-turn interactions, and handle ambiguity reliably at scale
• Develop and evolve agentic workflows including memory, context management, and multi-step tool orchestration
• Create evaluation frameworks, including LLM-as-judge pipelines, to measure quality and guide iteration
• Partner closely with product, engineering, and design to deliver seamless, user-facing experiences
• Balance experimentation with production rigor, ensuring performance, latency, and reliability at Spotify scale
• Continuously improve agent behavior through tight feedback loops between evaluation and real-world usage

Requirements:

• 5+ years of experience building and shipping machine learning systems in production environments
• Experienced with large language models and have worked on real-world applications beyond experimentation; shipped and maintained large scale systems with LLMs
• Deep understanding of challenges in conversational or agentic systems, such as context handling and multi-step reasoning
• Know how to evaluate ML systems rigorously and have experience designing metrics or evaluation pipelines
• Comfortable debugging complex interactions between models, tools, and system constraints like latency
• Care about building reliable, scalable systems that deliver high-quality user experiences
• Enjoy working cross-functionally and contributing to a collaborative, inclusive team environment