Senior Software Engineer - C++ at Roku | Cambridge, United Kingdom

Teamwork Makes the Stream Work. Join Roku and Transform TV Viewing Worldwide!At Roku, we are revolutionizing how the world watches television. As the leading TV streaming platform in the U.S., Canada, and Mexico, our ambition is to power every television globally. We pioneered streaming to the TV, and our mission is to connect the entire TV ecosystem, empowering consumers to access their favorite content, enabling publishers to build and monetize large audiences, and providing advertisers with unique engagement opportunities.From your very first day, you will contribute significantly to our mission. We are a dynamic public company where every team member plays a vital role. This is your opportunity to engage millions of TV streamers worldwide while gaining invaluable experience across various disciplines. About the RoleWe are looking for a talented Software Engineer with expertise in Python and automation, who has experience developing automated tools and tests for resource-constrained hardware platforms. Your work will involve creating and maintaining tools and tests that enhance our products and guarantee the highest quality in software releases deployed to devices in the field. In this role, you will develop solutions for testing, monitoring, and analyzing metrics across millions of players and TV products.As a versatile Software Engineer at Roku, you will be responsible for building fully automated test suites and performance monitoring tools. You will create automation that validates both the Roku OS system software and top-tier streaming applications across Roku TVs and Players, alongside the necessary infrastructure. This includes extending existing tests and developing new ones to assess memory usage, playback performance, compliance with specifications, and more. You will also maintain a multi-platform device farm for use by test and firmware engineers.This role requires a proactive and motivated individual with excellent communication, organizational, and technical skills, as you will collaborate cross-functionally with various engineering teams. Key ResponsibilitiesDevelop and maintain an automation framework for testing high-profile streaming applications.Collaborate with engineering teams to ensure seamless integration of automated testing solutions.Extend and create tests to evaluate memory consumption, playback efficiency, and adherence to specifications.Manage a multi-platform device testing environment.

Teamwork makes the stream work. Join Roku - Pioneering TV Streaming TechnologyRoku is the leading TV streaming platform in the U.S., Canada, and Mexico, aspiring to power every television globally. We revolutionized how audiences consume content and strive to connect consumers with the media they adore. Our platform empowers content creators to grow and monetize their audience while offering advertisers unique ways to connect with consumers.From day one at Roku, your contributions will be significant and appreciated. As a rapidly expanding public company, we foster an environment where every team member is actively engaged. This is your chance to make a difference for millions of TV streamers worldwide while gaining invaluable experience across various domains. About the TeamThe automation and tools teams at Roku are the driving force behind enhancing our testing and developer experience. By leveraging AI and analytics, these teams create frameworks, pipelines, and developer utilities that elevate validation coverage, accelerate release cycles, and enhance engineering productivity across embedded, mobile, and cloud services. Role OverviewWe invite you to join our automation and tools team as a Software Engineer Intern at Roku, where your passion for technology and creativity will be instrumental in our growth. This is a paid 12-week internship commencing in Summer 2026.As a Software Engineer Intern, you will undertake a project aimed at enhancing automation or developer tooling—possible tasks might include extending a Python test framework, developing a lightweight web or AI tool, or integrating automation into CI/CD processes. Your ResponsibilitiesLead an automation/tools project; examples include enhancing a Python test framework, creating a service for test orchestration, or integrating test steps into CI/CD pipelines.Write clean, reusable code (predominantly in Python and TypeScript/JavaScript for web tools); engage in code reviews and document your work for maintainability.Collaborate with engineers across different locations to implement enhancements and gather feedback. Preferred QualificationsProficient in Python programming with a solid understanding of REST APIs and a web framework (Flask, FastAPI, Django, Node.js, or Express).Interest in CI/CD tools (Jenkins, GitLab CI) and familiarity with automation practices.

Collaboration Fuels Innovation. Transforming the Way the World Experiences TelevisionRoku is the leading TV streaming platform across the U.S., Canada, and Mexico, and we are on a mission to empower every television globally. As pioneers in streaming technology, our goal is to be the central platform connecting the entire television ecosystem. We facilitate connections between consumers and their favorite content, help content publishers grow and monetize their audiences, and provide advertisers with unique tools to engage viewers.From your very first day at Roku, you will play a crucial role in our mission. We are a rapidly growing public company where every team member's contribution is valued. Join us to delight millions of TV streamers worldwide while gaining invaluable experience across diverse disciplines. About Our Team The Roku Trust Engineering team comprises a dedicated group of professionals passionate about information security. Our mission is to safeguard our customers, partners, devices, services, infrastructure, and data. We work collaboratively, sharing insights and expertise to stay ahead of potential threats. Join us, and you’ll be part of a vibrant team that thrives on overcoming challenges and celebrates achievements together.

Collaboration Fuels Innovation. Join Roku in Transforming TelevisionAs the leading TV streaming platform in the U.S., Canada, and Mexico, Roku aims to power every television globally. We pioneered the streaming revolution, and our mission is to connect the entire TV ecosystem. We empower viewers with access to their favorite content, assist content creators in reaching vast audiences, and offer advertisers unparalleled engagement tools.From day one at Roku, your contributions will be recognized and valued. In our rapidly growing public company, you won’t just observe; you will play a vital role in enhancing the experience for millions of TV streamers across the globe while gaining invaluable experience across various fields. About the TeamThe Advanced Development team at Roku is at the forefront of innovation, creating the next generation of intelligent and generative media systems. We explore concepts that are years ahead of production, crafting foundational technologies that will redefine content understanding, creation, and personalization across millions of Roku devices.This unique environment is comprised of a PhD-level, interdisciplinary team that merges machine learning research, software engineering, and DevOps. Our experts possess not only deep technical knowledge but also a broad creative vision, challenging the status quo, embracing uncertainty, and building unprecedented solutions. Our culture is collaborative, low-ego, and driven by ownership, trust, and curiosity.We seek an Applied Scientist with a robust foundation in mathematics, machine learning, and computer science, complemented by experience in cloud engineering, DevOps, and computer vision — someone who excels at the intersection of research and production.

Teamwork Makes the Stream Work Join Roku in Revolutionizing TelevisionRoku is the leading TV streaming platform in the U.S., Canada, and Mexico, and we are on a mission to power every television around the globe. As pioneers in streaming technology, we aim to connect consumers with the content they adore, empower content creators to build substantial audiences, and provide advertisers with innovative ways to engage viewers.From day one at Roku, your contributions will be significant and recognized. We are a rapidly growing public company where every team member plays a crucial role in delighting millions of TV streamers worldwide, all while gaining invaluable experience across diverse fields. About the Team The Advanced Development organization at Roku ventures beyond conventional product lines to innovate and create. We prioritize foundational technologies that will shape the future of every Roku device, working on groundbreaking ideas that redefine home entertainment. We are in search of extraordinary talent to join our exceptional team. Specifically, the Developer Experience team focuses on enhancing internal tooling to boost developer satisfaction and productivity by actively engaging with our users to identify and implement impactful improvements. The team utilizes a range of technologies, including modern Linux embedded C++, build systems, cloud backend systems, and web platforms. About the RoleWe are in search of a Senior Software Engineer who is passionate about advancing our platform emulation product. You will be engaged in a variety of projects that challenge conventions and push limits.

Teamwork makes the stream work. Join Roku: Transforming the Way the World Enjoys TVRoku stands as the premier TV streaming platform across the U.S., Canada, and Mexico, with an ambitious vision to power every television globally. As pioneers in the streaming realm, Roku's mission is to serve as the ultimate TV streaming platform, seamlessly connecting consumers to their favorite content while empowering publishers and advertisers alike.From your very first day at Roku, your contributions will be both significant and appreciated. We are a dynamic, rapidly growing public company where every team member plays a crucial role. Here, you'll have the opportunity to enchant millions of TV enthusiasts worldwide while gaining invaluable experience across diverse fields. Role OverviewWith millions of users globally, our products are renowned for their seamless functionality. This smooth user experience is a direct result of our unwavering commitment to developing not just intuitive but also incredibly user-friendly products. Central to this dedication is the Roku OS QA Team, which rigorously tests every product and feature to ensure we remain the most reliable streaming media platform available.Our mission is clear: to enable people to effortlessly discover and stream the content they adore. We achieve this by leveraging cutting-edge technology and engineering, always keeping the customer at the forefront of our initiatives. Team DynamicsAs a pivotal member of our team, you will utilize your diverse skill set to support both Software Engineers and QA Engineers, addressing the daily challenges they face. Your specialized knowledge will be essential in recommending enhancements that elevate quality and optimize workflows, ensuring we consistently surpass customer expectations.As a Senior Software Engineer in Test (SDET), you will be a transformative force, revolutionizing our testing methodologies. You will harness AI and advanced analytics to pinpoint quality gaps, design intelligent testing solutions, and set new benchmarks for testing effectiveness that transcend basic coverage metrics. Your ResponsibilitiesDesign and implement intelligent test analysis systems to identify quality gaps, forecast failure patterns, and enhance testing effectiveness.

Teamwork Makes the Stream Work. Roku is Revolutionizing Television ViewingAs the leading TV streaming platform in the U.S., Canada, and Mexico, Roku aims to power every television worldwide. We pioneered the streaming revolution and our mission is to be the connective tissue of the entire TV ecosystem. We link consumers with beloved content, empower publishers to cultivate and monetize audiences, and provide advertisers unique ways to engage viewers.From your first day at Roku, you will contribute significantly and feel valued. As a rapidly growing public entity, we encourage active participation—no one is just a bystander. You have the opportunity to enchant millions of TV streamers globally while gaining substantial experience across various disciplines. About the TeamThe UI team at Roku builds the essential frameworks, tools, and high-performance UI components that enhance experiences across millions of devices. We manage the middleware and UI layers that facilitate seamless navigation, responsive interactions, stunning animations, and consistent workflows for developers across our platform.Our focus encompasses graphics rendering, layout and animation systems, performance optimization, and developer APIs, all aimed at enabling the creation of reliable, visually appealing applications on a large scale. We thrive in a collaborative, high-trust environment, working closely with firmware, platform, and product teams to ensure a swift, robust, and future-ready user experience. About the RoleIn your position as a Senior Software Engineer on the UI team, you will design, develop, and optimize systems that are foundational to Roku’s user experience and developer platform. You will work on performance-critical code paths across graphics rendering, animation, layout, and UI frameworks, ensuring fluid visuals and highly responsive interactions across a diverse array of devices.You will be instrumental in defining core architectural decisions that will shape the future of our UI systems.

Teamwork makes the stream work. Roku is transforming the way the world experiences televisionAs the leading TV streaming platform in the U.S., Canada, and Mexico, Roku aims to power every TV globally. We were pioneers in streaming technology, and our mission is to connect the entire TV ecosystem. We link consumers with the content they cherish, empower content creators to grow and monetize large audiences, and offer advertisers unique tools to engage effectively with viewers.From your very first day at Roku, you'll be a key player in our dynamic environment. We're a rapidly growing public company where every voice matters and contributions are recognized. You’ll have the chance to delight millions of TV streamers worldwide while acquiring valuable experience across multiple disciplines. About the RoleWith a global user base relying on our products, we've garnered a reputation for delivering products that simply work upon first use and integrate seamlessly. This level of excellence is no coincidence; it stems from our dedication to ensuring our products are not only user-friendly but intuitively obvious. To bolster this commitment, the Roku Ads Test Automation Team is dedicated to validating Ad products and features for the industry's most dependable streaming media platform. Our objective is to assist users in discovering content effortlessly and streamlining the streaming experience through cutting-edge technology and engineering, always prioritizing the customer.We are looking for a skilled and adaptable Software Development Engineer in Test to take ownership of the quality of ad features on the Roku Platform. You will spearhead the end-to-end execution of ad products, which includes collaborating across teams for feature testing, developing comprehensive test plans, coordinating testing with manual QA teams, devising automation strategies, and overseeing the deployment of libraries and features. You should be prepared to represent automation and QA perspectives in discussions with cross-functional project team members while providing insightful end-user feedback to enhance customer experiences. This role necessitates a solid grasp of the software development life cycle, proficiency in diverse testing methodologies, excellent debugging skills, strong written and organizational abilities, and extensive automation experience. About The TeamOur team is focused on qualifying all Ads products and features on the Roku Platform. You will join a high-performing group of SDETs with a proven track record of successful deliveries.

Role Overview Roku, Inc. is hiring a Senior Software Engineer - Python (Tools Development) based in Cambridge, United Kingdom. As a leader in TV streaming across the U.S., Canada, and Mexico, Roku aims to power every television worldwide. The company connects viewers with content they love and helps publishers and advertisers reach broad audiences. This role sits within the Automation Support and Tools team. The team develops tools that boost the productivity and efficiency of Roku’s engineering groups, ensuring seamless integration across streaming platforms and smart home devices. Every contribution has a direct impact on millions of TV streamers globally. About the Team The Automation Support and Tools team is known for building solutions that work intuitively and reliably. The group focuses on creating and maintaining tools that support engineering teams, helping Roku products fit smoothly into connected home experiences. What You Will Do Design, build, and maintain automation frameworks and tools for embedded software devices. Support internal teams by developing software tools that streamline testing and product management across Roku’s lineup. Work closely with stakeholders to expand and enhance automation toolkits, adding new features and capabilities. Collaborate across teams to refine and innovate automation frameworks, improving software release validation processes. Location This position is based in Cambridge, United Kingdom.

Teamwork makes the stream work. Join Roku and Revolutionize TV StreamingRoku is the leading TV streaming platform in the U.S., Canada, and Mexico, striving to power every television globally. We pioneered the streaming experience and aim to connect consumers with their favorite content while enabling content publishers to grow and monetize audiences.From day one at Roku, you will be an integral part of our mission, contributing to a fast-paced public company where your input is valued. You'll gain hands-on experience while helping to delight millions of TV streamers around the world. About the Team At Roku, we are committed to nurturing talent through summer internship opportunities, allowing students to experience our passion, expertise, and vibrant company culture. The Advanced Development, AI @ Roku team is offering 4 summer internships in 2026, exclusively for postgraduate students currently pursuing or having recently completed a PhD. About the Role The internship will immerse each student in practical applications of their academic knowledge, fostering skills in the dynamic field of applied science.

Collaboration Fuels Innovation. Transforming the Future of TelevisionRoku is recognized as the leading TV streaming platform across the U.S., Canada, and Mexico, with ambitions to revolutionize how viewers engage with television worldwide. We were pioneers in bringing streaming technology to TVs, and our goal is to serve as the ultimate TV streaming platform that bridges the entire television ecosystem. We connect viewers with their favorite content, empower publishers to grow and monetize their audiences, and offer advertisers unparalleled tools to reach consumers.From day one at Roku, you will be an integral part of our mission. We are a rapidly expanding publicly traded company where every voice matters. You will have the chance to delight millions of viewers while acquiring valuable experience across diverse disciplines. Join Our Innovative UI TeamOur UI team at Roku is responsible for creating the fundamental frameworks, tools, and high-performance UI components that enhance user experiences across millions of devices. We manage the middleware and UI layers that facilitate seamless navigation, responsive interactions, rich animations, and consistent developer workflows across our platform. Our responsibilities encompass graphics rendering, layout and animation systems, performance optimization, and developer APIs that simplify the creation of reliable and visually appealing applications at scale. We thrive in a collaborative, high-trust environment, partnering closely with firmware, platform, and product teams to ensure a fast, robust end-to-end experience. Your RoleAs a Senior Software Engineer on the UI team, you will design, implement, and optimize the systems that form the backbone of Roku's user experience and developer platform. You will work on performance-critical code paths related to graphics rendering, animation, layout, and UI frameworks, ensuring smooth visuals and immediate responsiveness across various devices. You will help define the core architecture, collaborate across the technology stack with hardware, firmware, and application teams, and witness the direct impact of your work on tens of millions of users. This role is perfect for engineers who are passionate about solving complex technical challenges and prioritize performance and user experience.

Collaboration Fuels Innovation. Roku is revolutionizing television viewingAs the leading TV streaming platform across the U.S., Canada, and Mexico, Roku is on a mission to empower every television globally. We pioneered the streaming experience, connecting consumers with their favorite content, enabling publishers to grow and monetize their audiences, and providing advertisers with unique engagement tools.From your first day at Roku, your contributions will be both significant and appreciated. We are a rapidly expanding public company where every team member plays an active role. Join us in delivering joy to millions of TV streamers around the globe while gaining invaluable experience across diverse areas. Are you driven to create scalable, high-performance systems that handle vast data? Do you excel at designing and implementing innovative solutions that provide engineering teams with actionable insights? Are you eager to enhance open-source observability on a grand scale? Join us in extending our open-source observability tools and developing new capabilities to help teams manage data effectively and gain actionable insights. About the Team The Observability team within Roku’s Cloud Technology Infrastructure is essential to our platform's success. We are a dynamic, high-performing international team that values ownership, effective communication, and delivering impactful engineering solutions.

Teamwork Makes the Stream Work. Roku is Revolutionizing Television.As the leading TV streaming platform across the U.S., Canada, and Mexico, Roku is on a mission to empower every television globally. We pioneered the concept of streaming to TVs and aspire to connect consumers to their favorite content while enabling content publishers to grow and monetize their audiences. Advertisers can also benefit from our unique engagement capabilities.From day one at Roku, you'll be a key contributor in our dynamic and fast-growing public company, where every team member makes a significant impact. Join us to delight millions of TV streamers worldwide while gaining diverse experiences across various disciplines. About the TeamThe International TV Software team at Roku focuses on developing and delivering innovative software for television platforms in international markets, particularly in Europe and Australia. Collaborating closely with SOC partners, we aim to introduce new TV products, develop software that adheres to regional broadcast standards, and support certification with organizations like ETV, the BBC, and DTG. Our team engages in both new platform and common software development projects, contributing to both groundbreaking features and the ongoing evolution of Roku’s international TV software ecosystem. We value engineers who are inquisitive, adaptable, and eager to comprehend the full scope of the systems they work on.About the RoleAs a Software Engineer on the Regional TV Software team, you will play a vital role in developing and delivering software for regional TV platforms, engaging in both new projects and software development. You will collaborate with SOC vendors, assist in certification processes with UK and European broadcasting organizations, and contribute to defining and building new software features. This position is ideal for an early-career engineer who is curious, collaborative, and driven to expand their expertise across various areas of a complex software system.What You’ll Be DoingDeveloping and maintaining software for regional TV platforms, focusing on European and Australian markets.Collaborating with SOC vendors to support new initiatives and software projects.

We are seeking a talented Automation Software Engineer to join our dynamic team at ttp1. In this role, you will be responsible for developing and implementing automation solutions that enhance our software products and services. Your expertise will play a critical role in optimizing our processes and ensuring the highest standards of software quality. If you are passionate about automation, have a strong background in software engineering, and thrive in a collaborative environment, we want to hear from you!

Teamwork makes the stream work. Roku is revolutionizing the way the world enjoys television.As the leading TV streaming platform in the U.S., Canada, and Mexico, Roku is committed to empowering every television worldwide. We pioneered the streaming experience and strive to connect consumers with their favorite content, enable content creators to build and monetize expansive audiences, and offer advertisers unique opportunities to engage.From your first day at Roku, you will contribute significantly to our mission. We are a rapidly growing public company where every individual plays a crucial role. You will have the chance to delight millions of TV streamers globally while gaining invaluable experience across diverse disciplines. About the Role Roku is seeking a Senior Data Scientist to join our Core Analytics team, supporting the Viewer Product division. In this position, you will utilize data analytics to enhance our Live product. You will manage comprehensive analytics that influence how viewers discover, engage with, and return to Live experiences on Roku. Collaborating closely with product management and engineering, you will identify opportunities to create new features, drive their adoption, and generate value for Roku. This role requires an individual who is data-driven, detail-oriented, and possesses exceptional problem-solving skills. What You Will Be Doing

Teamwork makes the stream work. Join Roku in Revolutionizing TV ViewingRoku stands as the leading TV streaming platform across the U.S., Canada, and Mexico, with a vision to power every television globally. As pioneers in streaming technology, our mission is to connect the entire TV ecosystem. We bridge consumers with their favorite content, empower publishers to grow and monetize their audiences, and offer advertisers unique opportunities to engage viewers.Your journey with Roku begins with a meaningful contribution. As a rapidly expanding public company, we value proactive team members who thrive in a dynamic environment. Here, you will have the chance to delight millions of global TV streamers while gaining invaluable experience across diverse disciplines. About the TeamThe International TV Software team at Roku is dedicated to developing and delivering innovative software solutions for television platforms in international markets, particularly in Europe and Australia. Collaborating closely with SOC partners, the team aims to introduce new TV products, ensure compliance with regional broadcast standards, and support certification with organizations such as ETV, the BBC, and DTG. As a cross-functional team, we value engineers who are curious, adaptable, and eager to explore the complexities of the systems they work on.Your Role at RokuAs a Senior Software Engineer on the Regional TV Software team, you will play a pivotal role in developing and delivering software for regional TV platforms. Your responsibilities will include working on new TV platform initiatives, collaborating with SOC vendors, supporting certification processes with UK and European broadcasting organizations, and defining new software features. This position offers an excellent opportunity for engineers looking to advance their careers in a complex software environment.Your ResponsibilitiesDevelop and maintain software for regional TV platforms, focusing on European and Australian markets.Collaborate with SOC vendors and broadcasting organizations to ensure compliance and certification.Contribute to the design and implementation of new software features.

Join Roku, a leading streaming platform, as a Senior Software Engineer focused on enhancing our infrastructure, efficiency, and productivity. In this role, you will play a key part in architecting and developing innovative solutions that drive our technology forward. Collaborate with cross-functional teams to optimize system performance and ensure robust reliability in our services.

Teamwork makes the stream work. Roku is revolutionizing television viewing.As the leading TV streaming platform in the U.S., Canada, and Mexico, Roku aims to power every television globally. We were pioneers in bringing streaming to the TV and are committed to being the central platform connecting the entire TV ecosystem. We link viewers to their favorite content, empower content creators to grow and monetize their audiences, and provide advertisers with unique opportunities to engage consumers.From your first day at Roku, you will play a crucial role in our team. As a rapidly expanding public company, we encourage every employee to contribute actively and meaningfully. You’ll have the chance to enchant millions of TV streamers globally while gaining invaluable experience across various disciplines. About The TeamThe Roku Enterprise Engineering team is pivotal in developing a robust, integrated, and scalable platform that supports essential business processes throughout the organization. This team drives Roku's corporate strategy by automating workflows across all Business Systems, including Supply Chain, Finance, Sales Operations, and Human Resources. By reimagining traditional workflow automation approaches, we employ advanced engineering methodologies and API-driven design to enhance internal processes, increase efficiency, and deliver innovative solutions.Our expertise encompasses a broad spectrum of technologies, including Java and Python-based MicroServices, AWS/GCP cloud backend systems, and Big Data technologies like Hive and Spark, along with modern web applications. With a globally distributed team across the U.S., India, and Europe, we thrive on collaboration, leveraging diverse perspectives to tackle complex challenges. Our success is founded on a shared commitment to technical excellence, creativity, strong ownership, and a collaborative spirit that drives significant results for Roku's operations. About The RoleAs a senior technical lead, you'll act as a platform services developer, crafting innovative solutions using contemporary software frameworks and paradigms. You are a self-motivated problem solver with a solid foundation in building large-scale software platforms and applications. Your focus on execution will help you establish a reputation for consistently delivering projects on time.

Teamwork makes the stream work. Join Roku in transforming the way the world experiences televisionAs the leading TV streaming platform across the U.S., Canada, and Mexico, Roku is dedicated to revolutionizing the viewing experience for people everywhere. We have pioneered streaming technology and seek to unify the TV ecosystem, connecting viewers with their favorite content while empowering content creators to reach vast audiences and providing advertisers with innovative engagement tools.From day one at Roku, you will make significant contributions in a thriving public company where every team member plays an essential role. This is an opportunity to impact millions of TV streamers globally while acquiring valuable experience across various fields. About the RoleIn this senior software engineering position, you will be responsible for the architecture, design, implementation, and testing of the run-time and native renderer components of Roku's innovative software development kit (SDK). Collaborate closely with fellow engineers who focus on the higher-level scripting elements of the SDK.At Roku, we take pride in creating software and features that function seamlessly on both our oldest and newest devices. Hence, it's crucial that the SDK is designed to operate efficiently even on devices with minimal system resources like RAM, Flash memory, and CPU. What you’ll be doingArchitecting, designing, implementing, and testing the run-time and native renderer of Roku's SDK.