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Senior Machine Learning Engineer, Personalization, RewardsSpotify AB • New York, New York, United States
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Senior Machine Learning Engineer, Personalization, Rewards

Spotify AB
  • US
    New York, New York, United States
  • US
    New York, New York, United States
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À propos

The Rewards team in Personalization (PZN) is defining the next generation of large-scale personalization at Spotify by pioneering novel Reinforcement Learning (RL) methods for Large Language Models (LLMs). We drive massive impact across all recommendations discovery surfaces by moving beyond simple clicks to model and optimize for true long-term user satisfaction. Our core mission is to bridge discovery with lasting listening habits by developing and deploying sophisticated, mid-term behavioral reward signals—such as retention and habit formation metrics that directly shape the LLM-powered recommendation experience.
What You'll Do
Contribute to designing, scaling/building, evaluating, integrating, shipping, and refining reward signals for recommendations by hands‑on ML development.
Lead collaborations and align across PZN to integrate and A/B test mid‑term signals in various recommendation and discovery systems.
Promote and role‑model best practices of ML systems development, testing, and evaluation throughout the organization.
In your first 6 months, you will be responsible for ML development: prototyping models, building pipelines, productizing/scaling models, and launching A/B tests for personalized generative recommendations at Spotify.
Who You Are
You have a strong background in machine learning and enjoy applying theory to develop real‑world applications.
Reinforcement Learning (RL) expertise is key, and experience in RL for recommendations is a must have.
Expertise in statistics and optimization, especially in sequential models, transformers, generative AI, large language models (LLMs are a plus), and relevant fine‑tuning processes.
Where You'll Be
This role is based in New York
We offer you the flexibility to work where you work best! There will be some in‑person meetings, but still allows for flexibility to work from home
The United States base range for this position is $184,050 – $262,928 plus equity. The benefits available for this position include health insurance, six‑month paid parental leave, 401(k) retirement plan, monthly meal allowance, 23 paid days off, 13 paid flexible holidays, paid sick leave. These ranges may be modified in the future.
Spotify is an equal opportunity employer. You are welcome at Spotify for who you are, no matter where you come from, what you look like, or what’s playing in your headphones. Our platform is for everyone, and so is our workplace. The more voices we have represented and amplified in our business, the more we will all thrive, contribute, and be forward‑thinking! So bring us your personal experience, your perspectives, and your background. It’s in our differences that we will find the power to keep revolutionizing the way the world listens.
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  • New York, New York, United States

Compétences linguistiques

  • English
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