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Roku

Machine Learning Engineer, Search & Recommendations

at Roku

Cambridge, United Kingdom



Teamwork makes the stream work.

Roku is changing how the world watches TV

Roku is the #1 TV streaming platform in the US, and we've set our sights on powering every television in the world. Roku pioneered streaming to the TV. Our mission is to be the TV streaming platform that connects the entire TV ecosystem. We connect consumers to the content they love, enable content publishers to build and monetize large audiences, and provide advertisers unique capabilities to engage consumers.

From your first day at Roku, you'll make a valuable - and valued - contribution. We're a fast-growing public company where no one is a bystander. We offer you the opportunity to delight millions of TV streamers around the world while gaining meaningful experience across a variety of disciplines.

 

About the role

In this role, you will leverage your technical skills, business intuition, and analytical thinking to build best-in-class machine learning products. Excellent communication and presentation skills are essential, as the role demands both high technical aptitude and problem-solving abilities, motivation, and exceptional attention to detail. At Roku, we are a company of data-focused builders, particularly on the Search and Recommendations team. Every day, you'll have the opportunity to assess existing systems and find ways to make them better.

 

What You'll Be Doing:

  • Build and own the next-generation content knowledge platform and other algorithms/systems, creating a 100% personalised and unique experience for millions of Roku users.
  • Develop and implement advanced machine learning techniques, such as LLM and generative AI, to generate high-quality metadata and artwork for content on the platform.
  • Collaborate with cross-functional teams to understand business requirements and develop scalable, efficient machine learning solutions that improve content onboarding, search, recommendations, and voice interactions.
  • Design, develop, and deploy machine learning models and systems to address business challenges, including feature engineering, model training, and performance evaluation.

 

We're Excited If You Have:

  • 5+ years of experience applying Machine Learning to concrete problems at large-scale.   
  • Strong CS fundamentals, with the ability to write algorithms with ease.
  • Good understanding of data science and machine learning fundamentals like regression, classification, tree-based approach, neural networks, and sequence-based models.
  • Experience with advanced machine learning techniques, including LLM and generative AI for generating high-quality metadata and artwork.
  • Proven familiarity with NLP approaches like Word2Vec or BERT, including identifying the right KPIs and objective functions.
  • Experience working with big data systems (Spark, EMR, Kafka, S3, Airflow) and programming languages (Java, Scala, or Python).
  • Experience building in-production Machine Learning systems
  • Good understanding of system architecture, including experience with big data technologies, streaming architecture, and data pipelines.
  • MS in Computer Science, Statistics, or related field; a Ph.D. in CS or related fields is preferred.
#LI-MS3

Benefits

Roku is committed to offering a diverse range of benefits as part of our compensation package to support our employees and their families. Our comprehensive benefits include global access to mental health and financial wellness support and resources. Local benefits include statutory and voluntary benefits which may include healthcare (medical, dental, and vision), life, accident, disability, commuter, and retirement options (401(k)/pension). Our employees can take time off work for vacation and other personal reasons to balance their evolving work and life needs. It's important to note that not every benefit is available in all locations or for every role. For details specific to your location, please consult with your recruiter.

 

The Roku Culture

Roku is a great place for people who want to work in a fast-paced environment where everyone is focused on the company's success rather than their own. We try to surround ourselves with people who are great at their jobs, who are easy to work with, and who keep their egos in check. We appreciate a sense of humor. We believe a fewer number of very talented folks can do more for less cost than a larger number of less talented teams. We’re independent thinkers with big ideas who act boldly, move fast and accomplish extraordinary things through collaboration and trust. In short, at Roku you'll be part of a company that's changing how the world watches TV. 

We have a unique culture that we are proud of. We think of ourselves primarily as problem-solvers, which itself is a two-part idea. We come up with the solution, but the solution isn't real until it is built and delivered to the customer. That penchant for action gives us a pragmatic approach to innovation, one that has served us well since 2002. 

To learn more about Roku, our global footprint, and how we've grown, visit https://www.weareroku.com/factsheet.

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