Senior Software Engineer, Web

Roku; Cambridge; On-site; GBP 50,000 - 80,000; Full time

Job summary

Join Roku as a Senior Web Full Stack Engineer and enhance the user experience for millions of TV streamers globally. You'll work across the full development lifecycle, leveraging modern frameworks like React and Node.js to build scalable applications. This role offers a unique opportunity to contribute actively in a fast-paced environment where teamwork and innovation are key.

Benefits

Global mental health support

Voluntary benefits including healthcare

401(k)/pension options

Flexible time off

Qualifications

• 5+ years of full-stack web development experience.
• Strong experience with modern JavaScript frameworks.
• Proficiency in frontend caching strategies and performance optimization.

Responsibilities

• Build responsive user interfaces and optimize integrations.
• Implement caching strategies to reduce latency.
• Collaborate with backend teams on API contracts.

Skills

JavaScript

CSS3

HTML5

React

Node.js

TypeScript

Python

Go

Tools

GitHub Copilot

A/B testing frameworks

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

This UI team spends most of its time working on customer-focused features that improve the user experience, from content discovery and search to Roku Pay, subscriptions, and much more. Our product roadmap helps us accelerate our growth and scale, putting surprising new features into the hands of tens of millions of Roku users worldwide.

About the Role

With a user base exceeding 85 million globally, our products are known for their seamless integration and intuitive design. We are looking for a Senior Web Full Stack Engineer to join our UI Engineering team. In this role, you will work across the full development lifecycle to design, build, and maintain scalable web applications that enhance the user experience. You will leverage modern JavaScript frameworks, including React & Node.js, to deliver high-quality solutions that delight our customers and drive business growth.

What you'll be doing

• Build responsive interfaces that seamlessly integrate with front end and backend, optimizing for performance across web, tv & streaming sticks.
• Implement intelligent caching strategies at both frontend and BFF layers to reduce latency and improve user experience
• Collaborate with backend teams to define optimal API contracts and data structures for web consumption
• Create reusable UI components and design systems that work consistently across web and device platforms
• Monitor and optimize application performance, including bundle sizes, load times, and runtime efficiency
• Leverage AI-powered development tools and automation to accelerate development cycles and improve code quality

We're excited if you have

• 5+ years of full-stack web development experience with modern JavaScript frameworks (React, Vue.js, or Angular)
• Strong experience building and consuming services using Node.js, Python, or Go
• Proficiency in TypeScript, HTML5, CSS3, and responsive web design principles
• Experience with microservices architecture, API gateway patterns, and RESTful/GraphQL APIs
• Strong understanding of frontend caching strategies, CDN optimization, and web performance best practices
• Knowledge of streaming media integration, video players, and content delivery for web platforms
• Experience with modern build tools, bundlers, and CI/CD pipelines
• Familiarity with A/B testing frameworks and data-driven UI/UX decision making
• Proficiency with AI-assisted development tools (GitHub Copilot, ChatGPT, Claude, etc.) and automated testing frameworksPreferred Qualifications
• Previous experience in streaming media, OTT platforms, or entertainment technology
• Knowledge of recommendation systems UI/UX patterns and personalization interfaces
• Experience with Progressive Web Apps (PWAs) and cross-platform web technologies
• Understanding of accessibility standards (WCAG) and inclusive design principles
• Experience with state management libraries and real-time data synchronization
• Knowledge of web analytics, user behavior tracking, and performance monitoring tools
• Experience integrating AI/ML services for content personalization and user experience optimization
• Familiarity with automated code generation, intelligent refactoring tools, and AI-powered debugging solutions

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 penchant for action gives us a pragmatic approach to innovation, one that 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.

By providing your information, you acknowledge that you have read our Applicant Privacy Notice and authorize Roku to process your data subject to those terms.

Seniority level

• Seniority level

  Not Applicable

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  Software Development

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