Senior Machine Learning Engineer (RecSys)

We are building an AI-powered music platform that’s transforming how people create, explore, and experience music. Our product leverages cutting-edge AI technologies to provide personalized music recommendations and unique features tailored to every music enthusiast.

As we continue to grow, we’re looking for a Senior Machine Learning Engineer to design, build, and scale recommendation systems that deliver highly relevant, personalized experiences to our users. You will work on large-scale user interaction data, develop retrieval and ranking models, and take them from experimentation to production.

WHAT YOU’LL DO

• Design and implement retrieval and ranking architectures for personalized recommendations
• Work with large-scale user behavior and content data to extract meaningful signals
• Build end-to-end ML systems: data processing, feature engineering, training, evaluation, deployment, monitoring
• Run A/B tests and offline evaluations to measure model impact and guide improvements
• Collaborate with product and engineering teams to align recommendations with business goals
• Continuously monitor model performance

WHAT WE’RE LOOKING FOR

• Strong hands-on experience building recommendation systems or ranking models
• Deep understanding of machine learning fundamentals and evaluation methodologies
• Experience working with large-scale data (SQL, Spark, or distributed data systems)
• Proficiency in Python and modern ML frameworks (PyTorch, TensorFlow)
• Understanding of core ML concepts: supervised/unsupervised learning, evaluation metrics, feature engineering
• Experience deploying ML models to production and maintaining them over time
• Ability to balance experimentation with production reliability

NICE TO HAVE

• Experience with real-time recommendation systems
• Knowledge of search / information retrieval systems
• Familiarity with feature stores, model monitoring, and ML infrastructure
• Experience in media, music, or consumer-facing personalization products

WHY JOIN US

• Work on high-impact ML systems used by real users at scale
• Ownership over meaningful technical decisions, from modeling to production
• Collaborative, product-driven environment with strong engineering culture
• A supportive and dynamic startup culture where your ideas and contributions truly matter
• Opportunities for growth, learning, and shaping the future of our recommendation stack