Senior Machine Learning Engineer – AdTech

Overview

In this role you will help build a first-class ML platform for ad optimization at Roku, enabling end-to-end model lifecycle from feature engineering to online serving. You will work with cross-functional teams to improve ad relevance, demographics inference, and yield on large-scale systems. This is a hands-on ML engineering role at scale, offering impact across the ad tech stack and platform for a global audience.

Pay / Benefits

• mental health support
• financial wellness resources
• healthcare options
• retirement options (401(k)/pension)
• time off policies
• commuter benefits

Responsibilities

• Build and operate ML infrastructure spanning feature engineering, training, versioning, deployment, online serving, evaluation, and monitoring
• Perform data analysis and feature engineering to support multiple use cases and models
• Develop models for batch and real-time predictions using methods such as decision trees, logistic regression, neural networks, and Bayesian analysis
• Handle production operations including low-level system debugging, performance measurement, and optimization on large clusters
• Collaborate with product managers, data scientists, and other engineers to deliver impactful solutions
• Stay current with emerging technologies and industry trends

Key requirements

• Bachelor’s, Master’s, or PhD in Computer Science, Statistics, or related field

• Cross-functional collaboration
• Continuous learning
• Problem-solving
• Spark
• Python
• Java

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