Senior Machine Learning Engineer

Roku seeks a Senior Machine Learning Engineer to develop advanced algorithms for customer personalisation, ad targeting, and campaign optimisation within its marketing technology team. The role involves applying statistical and machine learning methodologies to solve high-impact problems, including real-time inference, model training, and system optimisation, using frameworks like Spark, Ray, and TensorFlow. Candidates should possess strong coding skills in Python and Java and experience with distributed data processing tools such as Hive and NoSQL databases. A background in applied machine learning for recommendation or ad-tech use cases is essential, with a university degree in a relevant field preferred. The position requires collaboration with cross-functional teams and a proactive approach to innovation, working within Roku’s hybrid environment.