Senior Machine Learning Engineer - Personalization, Horizon

country: US all locations: [New York, NY London] commitment: Permanent department: Engineering location: New York, NY team: Personalization What You'll Do: Design, build, evaluate, and ship agentic based features and interactive experiences to bring our products to the next level Collaborate with cross functional teams spanning user research, design, data science, product management, and engineering to build new product features that advance our mission to connect artists and fans in personalized and useful ways Prototype new approaches and productionize solutions at scale for our hundreds of millions of active users Promote and role-model best practices of ML systems development, testing, evaluation both inside the team as well as throughout the organization Actively contributed to a strong community of machine learning practitioners at Spotify Who You Are: Strong background in machine learning, natural language processing, and generative AI, with experience in applying theory to develop real-world applications Hands-on expertise with implementing end-to-end production ML systems at scale. Experience with production LLM scale based systems is a plus Experience with incorporating human feedback to improve LLM based systems using technicals like DPO, KTO, and reinforcement fine-tuning Experience with designing end-to-end tech specs and modular architectures for ML frameworks in complex problem spaces in collaboration with product teams Experience with large scale, distributed data processing frameworks/tools like Apache Beam, Apache Spark, and cloud platforms like GCP or AWS Where You'll Be: We offer you the flexibility to work where you work best! For this role, you can be within the North Americas region as long as we have a work location This team operates within the Eastern Standard time zone for collaboration