Senior Software Engineer, Embedded UI - C++

Roku, Inc.; Manchester; On-site; GBP 70,000 - 90,000; Full time

Job summary

A leading streaming technology company is looking for a Senior Software Engineer to innovate and optimize low-level C++ and BrightScript systems for graphics rendering. In this role, you'll take on performance-critical challenges, mentor junior developers, and collaborate with cross-functional teams. The ideal candidate will have over 5 years of software engineering experience with strong UI development expertise and proficiency in C++, Python, and JavaScript. This position offers comprehensive benefits and a dynamic work environment.

Benefits

Healthcare (medical, dental, vision)

401(k)/pension options

Mental health support

Vacation time

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.

Responsibilities

• Build scalable UI features optimised for millions of users.
• Lead technical investigations and architect solutions for complex embedded systems challenges.
• Collaborate with cross‑functional teams on global platform features.

Skills

C++

Python

JavaScript

UI development

AI/ML integration

Job description

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 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 role is 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.

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 and leverage generative AI tools to accelerate development
• Collaborate with cross‑functional teams on global platform features
• Develop engineering tools and mentor junior developers

Qualifications

• Stay current with AI trends and emerging technologies
• 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

About Roku

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 are a fast‑growing public company where no one is a bystander.

About the team: The Device Monetization and Themed Experiences (DMTE) team, a part of the Advertising organisation, builds 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. 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.

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 may include healthcare (medical, dental, and vision), life, accident, disability, commuter, and retirement options (401(k)/pension). Employees can take time off work for vacation and other personal reasons to balance their evolving work and life needs. Not every benefit is available in all locations or for every role. For details specific to your location, please consult with your recruiter.