Engineer, SDET

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This role addresses technical challenges by translating business and functional requirements into test deliverables and systems, with a focus on the voice/IVR applications supporting our postpaid, prepaid, Assurance Wireless, Retail Store, and Metro by T-Mobile customer experiences. It primarily involves developing, implementing, and sustaining test automation processes throughout software development and sustainment life cycles, including advancing test execution from manual processes toward automated tests integrated into the CI/CD pipeline.

The role is distinguished by leading test automation strategy and creating maintainable, high-quality automated test code and frameworks across a complex, multi-application environment. Success is measured by the effectiveness of automated test execution, integration into delivery pipelines, and quality assurance outcomes. The work impacts organizational software quality and reliability, supporting development teams and enhancing customer satisfaction.

• Develop and maintain automated and manual tests — including test cases for voice/IVR applications — to measure product quality and support continuous delivery pipelines.
• Ensure requirements and user stories are testable and clarify ambiguities to support accurate test design and execution.
• Coordinate with development and operations teams across supported applications and business lines to uphold testing practices and meet quality thresholds.
• Design, develop, and maintain automation tools, systems, and test data to support development and testing activities, including validating application responses against expected test data and call flows.
• Also responsible for other duties/projects as assigned by business management as needed.

• Bachelor's Degree plus 2 years of related work experience OR combination of education and experience deemed equivalent (Required)
• Acceptable areas of study include Technical Discipline. Equivalent experience considered. (Preferred)
• 2-4 years Professional experience using 3 or more development languages (e.g., C#, Java, JavaScript, etc.). (Preferred)
• 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.). (Preferred)
• 2-4 years Professional experience with various testing methodologies and strategies:
  Test Driven Development, Behavior Driven Development, etc. (Preferred)
• 2-4 years Professional experience using CA Service Virtualization or equivalent. (Preferred)
• 2-4 years Professional experience using issue-tracking software and agile project management systems. (Preferred)
• 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. (Preferred)

• Automated Testing
• Defects Management
• Dev Ops
• Java
• Requirements Analysis
• Scripting
• Software Testing
• Test Driven Development (TDD)
• Test Planning

• Voice/IVR or speech-application testing experience
• Git Lab and CI/CD pipeline experience
• Behavior-driven test scripting (e.g., Cucumber)
• Test data management and validation
• Critical thinking and ability to…