This is a unique hybrid engineering role for someone who combines deep expertise in test automation with a passion for build engineering and continuous delivery. Based in London, you will sit at the intersection of two critical disciplines - ensuring the quality of Cboe Europe's trading infrastructure through world-class automated testing, while simultaneously serving as a local engineering resource for our global builds and release process. Cboe Europe operates three equities exchanges, one trade reporting facility, and a platform for systematic internalizers. The quality and reliability of these platforms is non-negotiable. You will be a key guardian of that standard. Equally important, you will bring vision and leadership to our build engineering practice. You'll work closely with our builds team in the US to understand and support the existing release process, while proactively identifying opportunities to modernise it - leveraging current industry best practices to move us towards a faster, more reliable, and more automated delivery pipeline. This is not simply a role for someone who executes; it's a role for someone who can see what \"good\" looks like, build consensus across teams and time zones, and drive meaningful, lasting change. What You'll Be Responsible For Test Automation (Primary Focus) Designing, developing, and maintaining automated tests, frameworks, and test infrastructure using object-oriented programming principles and production-quality code Extending and improving our proprietary Python-based test automation framework Analysing complex technical and financial business requirements to design comprehensive test scenarios that realistically represent real-world trading activity Creating detailed test documentation and test plans for new features Identifying, documenting, and tracking defects; verifying fixes resolve issues completely Performing root cause analysis on test failures and system issues Supporting and maintaining test environments, ensuring they remain stable and consistently \"green\" Contributing to and improving continuous integration pipelines Participating in code reviews, design discussions, and agile ceremonies Working closely with software development, business, and trade desk teams across Cboe's global organisation Build