The Senior Systems Test Engineer will collaborate with engineering leads to develop system requirements, create test work products, and design automated test scripts for system-level testing. They will perform various testing types, validate system functionality, and prepare test reports. The role involves defect tracking, root cause analysis, and providing technical guidance. The engineer will also work with developers and stakeholders throughout the product lifecycle, ensuring timely delivery and acting as a quality advocate. The role also includes maintaining test requirements, developing test budgets and schedules, and evaluating vendor capabilities. The engineer will also be responsible for complying with Cubic's quality, health, safety, and security policies.