As a Mobile Senior QA Tester, your responsibilities include ensuring build standardization and stability across mobile ecosystems, leading a specialized team, creating test plans, and compiling bug reports. You will also be responsible for testing features independently, communicating status to various teams, triaging and regressing bugs, and mentoring testers. The role involves working with cross-functional teams across multiple locations. This role requires extensive familiarity with Apple and Android device testing, creating and executing test plans, logging and regressing defects, providing clear bug reports, and working on multiple tasks simultaneously.