Senior Machine Learning Engineer

Roku is transforming television viewing worldwide by creating the leading streaming platform and connecting audiences to content. The Senior Machine Learning Engineer will develop and optimise machine learning models for marketing and advertising, working on customer personalisation, ad relevance, and targeting improvements. The role involves feature engineering, model training, real-time inferencing, and building scalable ML infrastructure using frameworks like Spark, Ray, TensorFlow, and programming in Python and Java. Candidates need hands-on experience with recommendations, reinforcement learning, and large-scale data systems, preferably with a background in computer science or related field. The position requires collaboration with cross-functional teams to deliver impactful machine learning solutions that enhance marketing efficacy at scale. This role offers the chance to shape Roku’s advertising technology and impact millions of users globally.