Principal Machine Learning Engineer (AI/Platform)- League of Legends

Riot Games·Los Angeles, USA·Posted 19 August 2026

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About the role

ML engineers at Riot own the full lifecycle of machine learning in production — from problem framing through model design, deployment, and operation — building systems that serve players at global scale. They work across disciplines with engineers, data scientists, designers, and product teams to turn ML capabilities into player-facing experiences and tools for making great games. The Role As a Principal AI/ML Platform Engineer for League of Legends , you will set ML platform and integration strategy that enables League teams to build, launch, and operate player and developer facing ML experiences. You will build the systems, tooling, and operational standards that enable teams to deploy and operate ML at global scale. Your technical direction will influence product strategy and your work will directly shape how League of Legends evolves player-facing experiences. Your work will span year-plus efforts on League, mentoring and coaching across disciplines. You will report to the Senior ML Engineering Manager within the League of Legends game team. This role is based out of our Los Angeles area headquarters. Responsibilities Lead AI/ML workflow and MLOps for League of Legends; build…

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