Senior ML Engineer – Personalization & Recommendations (Hybrid)

Roku, Inc. in Manchester is seeking a seasoned Senior Machine Learning Engineer to apply ML to advertising and marketing use cases, including customer decisioning, creative optimisation, and campaign performance. You will work across data science, engineering and product teams to ship production‑grade models and ML tooling.

The role emphasizes feature engineering, scalable ML infrastructure, and real‑time as well as batch inference, using Spark, Ray, Python and Java in a hybrid office setting.

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