[Remote] Senior Machine Learning Engineer - Personalization

Note: The job is a remote job and is open to candidates in USA. Spotify is a leading music streaming service, and they are seeking a Senior Machine Learning Engineer to join their Personalization team. The role involves designing, developing, and evaluating recommendation models to enhance user experiences across Spotify's platforms.ResponsibilitiesContribute to the design, development, evaluation, and iteration of recommendation models — including candidate generation, ranking, and embedding models — powering music surfaces at scaleDrive hands-on ML development to improve reward signals and recommendation quality across Home, Now Playing, and other core surfacesContribute to the team's adoption of generative recommendation models, partnering with ML and AI infrastructure teamsPromote best practices in ML systems development, testing, and experimentation within the teamCollaborate with Data Science, Product, and Design partners to define success metrics, run A/B experiments, and translate insights into product improvementsPartner with teams across Personalization to integrate and test new signals in recommendation systemsSkillsYou have a strong background in machine learning and enjoy applying theory to real-world applications, with expertise in statistics and optimization — particularly sequential models, transformers, generative AI, and LLMsYou have hands-on experience building and shipping production machine learning systems at scale, ideally in personalization or recommendation systemsYou have experience implementing ML systems in Java, Scala, Python, or similar languagesYou have some experience with large-scale distributed data processing frameworks such as Apache Beam, Apache Spark, or Scio, and cloud platforms like GCP or AWSYou have experience collaborating across teams on complex ML projects and navigating cross-functional stakeholdersYou care about agile software processes, data-driven development, reliability, and disciplined experimentationFamiliarity with PyTorch, Ray or Hugging Face is a plusBenefitsEquityHealth insuranceSix month paid parental leave401(k) retirement planMonthly meal allowance23 paid days off13 paid flexible holidaysPaid sick leaveCompany OverviewSpotify is a commercial music streaming service that provides restricted digital content from a range of record labels and artists. It was founded in 2006, and is headquartered in Stockholm, Stockholms Lan, SWE, with a workforce of 5001-10000 employees. Its website is http://www.spotify.com.Company H1B SponsorshipSpotify has a track record of offering H1B sponsorships, with 15 in 2026, 140 in 2025, 117 in 2024, 169 in 2023, 259 in 2022, 172 in 2021, 115 in 2020. Please note that this does not guarantee sponsorship for this specific role.