Machine Learning Scientist • Senior

Who you are

You have a strong background in machine learning and have applied state-of-the-art research to real-world problems — your experience includes developing novel methodologies that drive performance in complex systems. You are familiar with reinforcement learning and understand how to leverage AI to optimize outcomes in advertising ecosystems.

You possess a deep understanding of control and optimization systems, and you thrive in environments that require real-time decision-making — your analytical skills enable you to dissect complex problems and propose effective solutions. You are comfortable working with distributed systems at large scale and low latencies, ensuring that your solutions are both efficient and effective.

You are a collaborative team player who enjoys working with cross-functional teams — your ability to communicate complex ideas clearly helps bridge the gap between technical and non-technical stakeholders. You are passionate about the impact of your work and are eager to contribute to a mission-driven organization.

Desirable

Experience with auction dynamics and a solid grasp of the advertising ecosystem would be a plus — you understand the nuances of how advertisers, publishers, and platforms interact and can navigate these relationships effectively. Familiarity with experimentation and inference platforms will also be beneficial as you work to evolve the systems that power advertising performance.

What you'll do

In this role, you will apply your expertise in machine learning to develop innovative solutions that enhance advertising performance across Roku's ecosystem — you will conduct your own research and collaborate with other scientists to push the boundaries of what is possible in this space. You will be responsible for designing and implementing algorithms that optimize real-time decision-making processes, ensuring that all participants in the advertising ecosystem benefit from your work.

You will work closely with engineering teams to integrate your models into production systems, ensuring that they operate efficiently and effectively at scale — your role will involve continuous iteration and improvement of these systems based on performance metrics and feedback. You will also engage in cross-team collaborations to align on goals and share insights that drive the overall success of the advertising performance group.

What we offer

At Roku, you will be part of a fast-growing public company that values innovation and teamwork — you will have the opportunity to make a meaningful impact on how millions of people experience television. We offer a competitive salary and benefits package, along with a collaborative work environment that encourages professional growth and development. Join us in shaping the future of TV streaming and advertising.