Senior Software Engineer, Machine learning- Search

<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><p><strong><span data-contrast="none"><span data-ccp-parastyle="heading 3">About the role </span></span></strong><span data-ccp-props="{"134233117":false,"134233118":false,"134245418":true,"134245529":true,"335559738":281,"335559739":281}"> </span></p> <p>Our <strong>Search Platform</strong> sits at the heart of the Roku experience, powering voice, text, and visual discovery across <strong>100M+ active accounts</strong> and every Roku-powered device worldwide.<br> We own the entire stack —from ingesting enriching a multi-million-title knowledge graph, to low-latency retrieval services and large-scale machine-learning systems that personalize results in real time. Our work doesn’t just help users <em>find</em> shows; it drives core product surfaces (home-screen rows, browse hubs, Roku Voice, mobile app search) and fuels partner monetization. If you enjoy turning cutting-edge research into products used billions of times a day, you’ll thrive here.</p> <p><span data-contrast="auto">Roku’s footprint has more than quadrupled in the past five years, and user expectations have leaped just as fast—think </span><strong><span data-contrast="auto">LLM-based query understanding, vector-DB retrieval, on-device models, and multimodal search</span></strong><span data-contrast="auto"> (voice, text, image). We’re now rebuilding our relevance stack for the next decade, blending classic IR with generative-AI techniques. You will be a technical leader spearheading that transformation.</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":240,"335559739":240}"> </span></p> <p><strong><span data-contrast="none"><span data-ccp-parastyle="heading 3">What </span><span data-ccp-parastyle="heading 3">you'll</span><span data-ccp-parastyle="heading 3"> be doing</span></span></strong><span data-ccp-props="{"134233117":false,"134233118":false,"134245418":true,"134245529":true,"335559738":281,"335559739":281}"> </span></p> <ul> <li><span data-contrast="none">Apply state of the art ML on search using techniques in deep learning, bandits, transformers, LLMs, causal inference, and optimizations to make our users more delighted and engaged on the platform</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li> <li><span data-contrast="none">Run online AB tests and analyze them against the critical business KPIs</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li> <li><span data-contrast="none">Collaborate with US engineering teams as well as cross-functional teams to translate business requirements into technical specifications</span><span data-ccp-props="{"134233117":false,"134233118":false,"335559738":0,"335559739":0}"> </span></li> <li><span data-contrast="none">Nurture our ML ecosystem to make it withstand scale, developer velocity and future business shifts</span><span data-ccp-props="{"134233117":false," ... (truncated, view full listing at source)