MarketAxess is on a journey to digitally transform one of the world's largest financial markets, enabling the shift from analog, phone-based trading to a fully electronic marketplace. Our platform makes trading fixed-income more accessible, ultimately improving transparency, efficiency, and competition in the marketplace. We are seeking an experienced and hands-on Senior QA Automation Engineer to play a strong leadership role, owning automated testing across our Trading platform and helping to set the QA vision for future releases. You will architect, design, build, and run comprehensive test suites, integrate them into our CI/CD toolchain, and drive quality from planning through release in a fast-paced Agile team. This position requires automation and manual testing (where features are not yet covered by automation). We embrace a culture of collaboration and experimentation while striving to encourage all team members to focus on continuous improvement and learning.