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At T-Mobile, we invest in YOU Our Total Rewards Package ensures that employees get the same big love we give our customers. All team members receive a competitive base salary and compensation package - this is Total Rewards. Employees enjoy multiple wealth-building opportunities through our annual stock grant, employee stock purchase plan, 401(k), and access to free, year-round money coaches. That's how we're UNSTOPPABLE for our employeesJob OverviewThe Software Development Engineer in Test (SDET) tackles a variety of technical challenges. They play an active role in translating business and functional requirements into concrete deliverables and building test systems in partnership with other technology leaders within the team. They are a core member of the development team and participate in the complete development lifecycle process. They develop, implement, and sustain test automation processes, practices, and controls in support of application and system requirements, development and test activities throughout the software development and sustainment lifecycles. They lead and consult on test automation strategy, requirement, design, implementation and execution. The SDET resources create high quality, maintainable, and performant code for automated test cases and the frameworks to execute and report them.Job Responsibilities:Testing (Technical)- Coordinates, develops and maintains all test activities.- Manages defects.- Acts as a liaison with end-to-end test execution team. (Context of Domain Team only).- Writes and executes automated and manual tests as needed to provide an ongoing measure of the quality of the product.- Analyzes code coverage using industry standard tools such as SonarQube.- Ensures automated tests are integrated into the Continuous Delivery Pipeline.- Designs, develops, and maintains automation systems and tools to be used by development and test engineers.- Assists in designing test cases for unit, functional, performance, scalability, and durability testing (where applicable).- Manages and grooms the automated and manual test suites regularly to ensure proper balance between coverage and fast feedback cycles.- Works with IT partner teams to provide test data by request, creation or modification for all phases of the delivery process via a repeatable and automated process.- Grows and maintains technical skills and expertise through continuing education and training.Testing (Requirements Gathering)- Ensures requirements and/or user stories are testable.- Clarifies any ambiguity with requirements, user stories, design and other artifacts produced as part of the product lifecycle.Provides estimates for user stories and tasks.Testing QA- Closely coordinates with both Dev and Ops regarding testing practices and ensuring quality thresholds are met.- Contributes in Design and Design Reviews.- Contributes in code review.Education and Work Experience:Bachelor's Degree Technical Discipline, IT Technology or related field of study. Equivalent experience considered. (Required)2-4 years - Professional experience using 3 or more development languages (e.g., C#, Java, JavaScript, etc.).2-4 years - Professional experience using 3 or more automation tools (e.g., Selenium, TestNG, Appium, Sauce Labs, Rest Assured, Postman, Cucumber, Jasmine, Protractor, etc.).2-4 years - Professional experience with various testing methodologies and strategies: Test Driven Development, Behavior Driven Development, etc.2-4 years - Professional experience using CA Service Virtualization or equivalent.2-4 years - Professional experience using issue-tracking software and agile project management systems.2-4 years - Professional experience designing and developing applications on Unix or Windows environment, mobile platforms (Android or iOS) or designing complex multi-tiered applications.Te