Software Development Engineering , Senior

Roku is changing how the world watches TVRoku is the #1 TV streaming platform in the U.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.The Advanced Development team pushes the boundaries beyond product lines to build genuinely new things. We think independently of standard shipping cadences and timelines, working on foundational technologies that could impact every Roku device in the future and on ideas that no one's seen in their living room yet.You will implement new APIs for parts of Roku's system software and apply your refactoring expertise to ensure API capabilities satisfy all requirements without privileged workarounds. This work can include anything from optimizing common libraries to redesigning the APIs and development environment used by third-party apps running on the Roku platform. You will collaborate closely with cross-functional engineering teams to deliver high-performance, ultra-reliable software at scale. The ideal candidate is a forward thinker with endless curiosity, a strong bias for action, and a demonstrated commitment to using AI to accelerate engineering outcomes. You will have a direct impact on the architecture of Roku OS, which ships worldwide and runs on devices in more than 85 million streaming households.How will I use AI at Roku?At Roku, we don't just use AI, we work with it. AI agents and smart tools help power drafts, analysis, and repetitive workflows, while our people bring direction, judgment, and accountability. We're looking for curious, adaptable builders who can show how they've used AI or automation to move faster, raise the bar, and scale their impact.We value your AI skills if you have built fluency across the agentic engineering toolchain — coding harnesses like Claude Code or Cursor, MCP servers, custom skills, or agent frameworks. And you can describe projects where you shipped real work with these tools. You know how to drive an agent, verify its output, and ramp on an unfamiliar codebase with an agent helping you.Be an agentic engineer to evolve parts of the RokuOS system software that exposes fundamental APIs for the Roku platform, used internally and externally for higher-level SDKsDemonstrate excellence in C++ development and deliver high-performance, ultra-reliable softwareUse software design skills to deliver extensive changes to an existing codebase that are modular and maintainableDesign and implement new APIs that enable channel partners to leverage modernized platform capabilitiesCollaborate with cross-functional teams to ensure API designs satisfy all requirements and adhere to platform standardsApply refactoring expertise to improve existing system software architecture without introducing privileged workaroundsLeverage AI tools and agentic workflows to accelerate development, improve code quality, and scale engineering impactWhat experience would help someone be successful in this role at Roku?8+ years of experience in C/C++ software development, including firmware and full-stack systems, architecture, and API design2+ years of Linux application development experienceAdvanced AI proficiency, including the ability to build repeatable agentic workflows, design autonomous AI agents, and independently complete complex tasks using reasoning and planning capabilities — beyond basic prompt usageComfort with multi-threaded and multi-process developmentStrong analytical mindset with attention to detail and a self-driven approach to problem solvingBachelor's and/or master's degree in Computer Science, Computer Engineering, or a related technical discipline#LI-SB5What's Roku's approach to hybrid working?Roku fosters an inclusive and collaborative environment where teams generally work in the office Monday through Thursday. Fridays are generally flexible for remote work, except for employees whose specific roles or assigned office location require five days' a week attendance.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). Employees are supported in taking time off, in accordance with local leave policies and other personal needs to support their evolving work and life needs. 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.