Senior Software Engineer, Ads Auction Platform

Salary: £60,000 - 100,000 per year

Requirements:

• Senior-level Java engineering experience, including concurrency and JVM performance tuning
• Experience with low-latency, high-QPS distributed systems, ideally in ad tech or real-time bidding
• Familiarity with microservices, containerized deployments, and SQL/NoSQL data stores at scale
• Comfort with auction or marketplace concepts such as pacing, pricing, and ranking, or a fast ability to pick them up
• Demonstrated AI/agentic-tooling fluency, including agentic engineering tools and workflows
• Clear communicator who can explain reasoning and trade-offs, not just conclusions

Responsibilities:

• Design and build real-time bidding infrastructure handling pacing, pricing, and ranking
• Own performance and reliability for Java systems operating under strict latency budgets
• Work across microservices, containers, and cloud infrastructure supporting real-time ad serving
• Partner with the Ad Auctions team on shared system-design decisions across the auction path
• Diagnose and resolve complex distributed-systems issues under production load
• Communicate technical trade-offs clearly to engineering and cross-functional partners

Technologies:

• AI
• Cloud
• Support
• JVM
• Java
• NoSQL
• Roku
• SQL
• microservices
• AI Agents
• Claude Code
• Cursor
• LESS
• MCP

More:

We are Roku, the #1 TV streaming platform in the U.S., Canada, and Mexico, with more than 70 million active accounts. We pioneered streaming to the TV and continue to innovate across the TV ecosystem, connecting consumers to content, helping publishers build and monetize audiences, and giving advertisers unique ways to reach consumers at scale. You will join our Auctions/Marketplace team as a senior engineer focused on real-time bidding, working from our UK base with a Manchester-anchored setup. We foster an inclusive, collaborative hybrid environment where teams generally work in the office Monday through Thursday, with Fridays usually flexible for remote work. We offer a comprehensive benefits package that may include mental health and financial wellness support, healthcare, life, accident, disability, commuter, and retirement options, plus time off in line with local policies. We value fast-moving, hands-on builders who use AI thoughtfully to improve speed, quality, and impact, and we are known for a pragmatic, high-trust culture focused on building and delivering great products.

last updated 34 week of 2026