As a Senior Software Test Engineer, you will work with engineering leads to understand system requirements, manage system test personnel, and create software test work products like test plans and reports. You will also conduct system tests, maintain test databases, and prepare test readiness reviews. The role involves technical guidance, budget and schedule management, and interfacing with various stakeholders to ensure effective software testing. The job also requires active management of system ARQs and issues, and close collaboration with Engineering throughout the product lifecycle. Effective communication and support for departmental projects are essential.