Senior Software Engineer, AD Serving

Salary: £60,000 - 100,000 per year

Requirements:

• 10+ years of experience building large-scale, low-latency distributed systems
• Strong command of Java or C++
• Solid understanding of algorithms, data structures, performance optimization techniques, object-oriented programming, multi-threading, and real-time programming
• Experience with distributed caching, SQL/NoSQL, and other databases is a plus
• Experience with big data and cloud services such as AWS or GCP is a plus
• Experience in the advertising domain is a big plus
• B.S. or M.S. degree in Computer Science, Engineering, or equivalent
• Self-motivated with a high level of accountability and ownership
• Strong critical thinking and practical decision-making skills
• Results-oriented mindset
• Collaborative, nonpolitical, and team-oriented
• Desire to win in a highly competitive industry
• AI literacy and curiosity, including prior use or exploration of Gen AI

Responsibilities:

• Work with a highly skilled engineering team to design, develop, and maintain large-scale, high-performing, real-time applications
• Own feature development and work directly with product and other engineering teams
• Communicate effectively with both technical and non-technical audiences
• Evangelize best practices across developers, QA, and infrastructure/ops
• Evangelize platform innovation and reuse
• Deliver high-quality software in a timely fashion

Technologies:

• AI
• AWS
• Big Data
• Cloud
• GCP
• Support
• Java
• NoSQL
• Roku
• SQL
• AI Agents
• Claude Code
• Cursor
• LESS
• MCP

More:

We are Roku, the #1 TV streaming platform in the U.S., Canada, and Mexico, and we are working to power every television in the world. We pioneered streaming to the TV and our mission is to connect the entire TV ecosystem by helping consumers find the content they love, enabling publishers to build and monetize audiences, and giving advertisers unique ways to engage consumers. Our Ad Engineering team is building a highly scalable, highly available real-time advertising platform to support and grow our advertising business. We offer a fast-paced, collaborative environment, meaningful experience across multiple disciplines, and a hybrid working model where teams generally work in the office Monday through Thursday, with Fridays typically flexible for remote work. Our benefits include global mental health and financial wellness support, as well as local benefits that may include healthcare, life, accident, disability, commuter, and retirement options, plus time off in accordance with local policies.

last updated 40 week of 2026