Senior Machine Learning Engineer
RokuCambridge, United KingdomPosted 24 February 2026
Tech Stack
Job Description
<div class="content-intro"><h2 style="font-family: GothamBold,Helvetica,Arial,sans-serif; color: #662d91;">Teamwork makes the stream work.</h2>
<p> </p>
<h3 style="font-family: GothamBold,Helvetica,Arial,sans-serif;"><strong>Roku is changing how the world watches TV</strong></h3>
<p>Roku is the #1 TV streaming platform in the U.S., Canada, and Mexico, 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.</p>
<p>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.</p>
<p> </p></div><h3 data-start="372" data-end="393"><strong data-start="375" data-end="393">About the Team</strong></h3>
<p data-start="395" data-end="744">The Advanced Development team at Roku pushes beyond today’s product lines to invent the next generation of intelligent and generative media systems.<br data-start="547" data-end="550">We explore ideas that sit years ahead of production, developing foundational technologies that will redefine how content is understood, created, and personalised across millions of Roku devices.</p>
<p data-start="746" data-end="1195">This is a rare environment — a PhD-level, cross-disciplinary group combining machine learning research, software engineering, and DevOps.<br data-start="887" data-end="890">Everyone here is an expert, but not narrowly focused. The team blends deep technical mastery with broad creative vision — people who challenge convention, embrace ambiguity, and build what’s never been built before. It’s a collaborative, low-ego, ownership-driven culture built on trust and curiosity.</p>
<p data-start="1197" data-end="1454">We’re seeking an Applied Scientist with a strong foundation in mathematics, machine learning, and computer science, combined with experience in cloud engineering, DevOps, and computer vision — someone who thrives where research meets production.</p>
<p data-start="1197" data-end="1454"> </p>
<h3 data-start="1461" data-end="1482"><strong data-start="1464" data-end="1482">About the Role</strong></h3>
<p data-start="1484" data-end="1867">As a Senior Applied Machine Learning Engineer, you’ll help design, build, and deploy the systems that make media smarter.<br data-start="1609" data-end="1612">You’ll work across the full model and software lifecycle, from prototype to production, developing scalable ML pipelines and cloud architectures that power generative AI, intelligent media understanding, content analysis, and advertising intelligence.</p>
<p data-start="1869" data-end="2136">You’ll operate at the intersection of machine learning, infrastructure, and software engineering, taking ownership from data collection through deployment — and seeing your work directly influence how audiences experience Roku’s content and advertising ecosystem.</p>
<h3 data-start="2143" data-end="2170"> </h3>
<h3 data-start="2143" data-end="2170"><strong data-start="2146" data-end="2170">What You’ll Be Doing</strong></h3>
<ul data-start="2172" data-end="3242">
<li data-start="2172" data-end="2292">
<p data-start="2174" data-end="2292">Deploying scalable, fault-tolerant computer vision, media understanding, and generative AI systems to production</p>
</li>
<li data-start="2293" data-end="2416">
<p data-start="2295" data-end="2416">Overseeing the full model development cycle: ideation, prototyping, implementation, deployment, testing, and operations</p>
</li>
<li data-start="2417" data-end="2525">
<p data-start="2419" data-end="2525">Designing uncertainty metrics and communica ... (truncated, view full listing at source)
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