Sr Engineer, SDET

Job Description:

As a Software Development Engineer in Test (SDET) you will be responsible for leveraging and extending existing test automation tools and frameworks. You must be comfortable doing so in a fast-paced, agile environment. You should have strong experience in building automated testing capabilities for CI/CD pipelines and are knowledgeable in testing of distributed systems on public and private clouds. Knowledge and experience of Test-Driven Development is recommended.


Requires competency in customer focus, change & innovation, organized design, strategic thinking, and relationship building with a focus on results.

Essential Functions
High level of proficiency in at least one test automation framework required.
Translate business/functional requirements and user stories into lightweight, documented test plan.
Utilize development skills to build (code) test automation functionality per test plan, with deliverables to include automated test results/coverage.
Groom & maintain automated test packages and automation plans for ongoing systems enhancements.
Participate as a member of "one team" for after hours support as required for production releases and to respond as part of Tier 4 support team for production issues.
Meet project schedules by providing accurate estimates of effort required for test automation deliverables, providing updates on progress to agile team, and escalating issues that may affect project success.
Maintain technical skills and expertise through continuing education and training.
Collaborate/Partner with other teams including Enterprise Testing, Release Planning and Management, Business Systems Analysis, Project Management, and Application Support on successful delivery of systems enhancements.


Minimum Required

Minimum 5 Years Application Test Experience.
Minimum 3 years professional experience automating test cases within an agile team.
Good understanding of Software Development Lifecycle & Software Testing concepts.
Professional experience in developing/maintaining/improving test automation.
Ability to work with previously written code and make modifications as necessary.
Professional experience in any language (Java, Python, C#, etc.)
Excellent problem Solving skills.


Knowledge of Cloud Computing platforms (such as AWS).
Working knowledge of CI Tools (such as Jenkins).
Knowledge of RESTful Web services.
Experience mentoring other members of test team.
Experience developing in Java is a plus.
Experience in the wireless industry a plus.

Education - Minimum Required

Bachelors Degree in Computer Science or equivalent

Company Profile:

As America's Un-carrier, T-Mobile US, Inc. (NASDAQ: TMUS) is redefining the way consumers and businesses buy wireless services through leading product and service innovation. The company's advanced nationwide 4G and 4G LTE network delivers outstanding wireless experiences for customers who are unwilling to compromise on quality and value. Based in Bellevue, Washington, T-Mobile US provides services through its subsidiaries and operates its flagship brands, T-Mobile and MetroPCS. For more information, please visit

EOE Statement:

We Take Equal Opportunity Seriously - By Choice

T-Mobile USA, Inc. is an Equal Opportunity Employer. All decisions concerning the employment relationship will be made without regard to age, race, ethnicity, color, religion, creed, sex, sexual orientation, gender identity or expression, national origin, marital status, citizenship status, veteran status, the presence of any physical or mental disability, or any other status or characteristic protected by federal, state, or local law. Discrimination or harassment based upon any of these factors is wholly inconsistent with our Company values and will not be tolerated. Furthermore, such discrimination or harassment may violate federal, state, or local law.

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