Senior Software Engineer, Embedded UI - C++

Roku; Cambridge; On-site; GBP 70,000 - 90,000; Full time

Benefits offered by this job

Healthcare benefits

Retirement options

Flexible time off

Mental health support

Job summary

A leading streaming technology company is seeking a Senior Software Engineer in Cambridge. You will design and optimize low-level systems for graphics rendering, tackle complex challenges, and shape architecture impacting millions of users. The ideal candidate has over 5 years of experience, strong C++ skills, and knowledge of AI applications. This role offers a fast-paced environment, collaborative culture, and comprehensive benefits package.

Qualifications

• 5+ years software engineering experience with UI development expertise.
• Advanced C++ skills plus proficiency in Python/JavaScript.
• Strong root cause analysis and technical communication abilities.
• Knowledge of AI applications and experience with generative AI tools.

Responsibilities

• Build scalable UI features optimised for millions of users.
• Lead technical investigations and architect solutions for complex embedded systems challenges.
• Integrate AI/ML capabilities to accelerate development.
• Collaborate with cross-functional teams on global platform features.
• Develop engineering tools and mentor junior developers.

Skills

C++

Python

JavaScript

AI applications

Technical communication

Job description

Teamwork makes the stream work.

Roku is changing how the world watches TV

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.

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 team

At Roku, the Device Monetization and Themed Experiences (DMTE) team, a part of the Advertising organisation, is where the magic behind the scenes happens. We’re the engineers who build the high-performance graphics and OS foundations that power the FRAME engine — the core technology enabling Roku’s smooth, responsive, and visually rich experiences on millions of devices worldwide. Our work lives deep in the system, but its impact is felt every time a user navigates a menu, enjoys an animated ad or is wowed by the bespoke experience build to market the latest TV show or Movies. We thrive on solving the toughest technical challenges — from optimizing GPU pipelines to fine-tuning memory usage — using both modern C++ and BrightScript to deliver rock-solid, high-performance solutions. We work in a collaborative, high-trust environment where great ideas can come from anywhere, partnering closely with firmware, UI, and product teams to ensure our platform is lightning fast, reliable, and ready for the next generation of streaming innovation. If you love working close to the metal, pushing hardware to its limits, and building the invisible foundations that make great user experiences possible, this is the team for you.

About the role

As a Senior Software Engineer in the DMTE team, you’ll be at the heart of Roku’s platform innovation — designing, implementing, and optimizing low-level C++ and BrightScript systems for graphics rendering, OS services, and the FRAME engine. You’ll take on complex, performance-critical challenges that demand both creativity and precision, ensuring our devices deliver buttery-smooth visuals and instant responsiveness at scale. You’ll have the opportunity to shape core architecture, work across the stack with hardware, firmware, and application teams, and see your work directly impact tens of millions of users. This is a role for engineers who love deep technical problem-solving, care about performance down to the last millisecond, and want to work on technology that quietly powers an entire ecosystem. If you’re ready to push boundaries, mentor others, and help define the future of streaming, we’d love to hear from you.

What you'll be doing

• Build scalable UI features optimised for millions of users
• Lead technical investigations and architect solutions for complex embedded systems challenges
• Integrate AI/ML capabilities and leverage generative AI tools to accelerate development
• Collaborate with cross-functional teams on global platform features
• Develop engineering tools and mentor junior developers
• Stay current with AI trends and emerging technologies

We're excited if you have

• 5+ years software engineering experience with UI development expertise
• Advanced C++ skills plus proficiency in Python/JavaScript
• Strong root cause analysis and technical communication abilities
• Knowledge of AI applications and experience with generative AI tools
• Proactive mindset with passion for continuous learning and fast iteration

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's our pragmatic approach to innovation, which 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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