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BECU Sr Software Developer Engineer in Test ( Sr. SDET ) in Seattle, Washington


The Sr Software Developer Engineer in Test (SDET) will design test cases and specifications and be responsible for the bulk of the more complex automated testing work. The Sr SDET ensures software built at BECU is designed to be testable. The Sr SDET is responsible for designing and coding automated tests, tests scripts, test data models, and building test data. The Sr SDET will recommend and implement test solutions for business problems, contributing to system and service design and architecture. This position will present and contribute solutions to technical leadership. The Sr SDET also works closely with and mentors other developers, business and systems analysts, to build enterprise class software.


  • Perform all responsibilities in accordance with BECU Competencies, compliance, regulatory, and Information Protection requirements.

  • Assesses the design and structure of services and applications, and its interaction with various processes, identifying areas of improvement in existing code. Debugs applications and services and performs root cause analysis of errors.

  • Analyze production issues, identify test gaps across the entire testing stack and make systemic improvements to Automation testing.

  • Present and communicate technical topics to the engineering community regularly at cross-functional team meetings.

  • Review and approve code and tests written by other SDETs for style, consistency, and adherence to BECU standards. Collaborates with senior engineers, providing expertise / input to those standards.

  • Mentor SDETS / QA on the team via code review and test case reviews.

  • Ensure automated tests are integrated with software builds and that they execute reliably in our CI system.

  • Works with developers, architects, and product owners to design and document the team’s testing roadmap and vision.

  • Effectively lead and leverage small testing teams while ensuring accurate results, identifying failure patterns, and supporting bug triage processes to bring issues to closure.

  • Mentor junior developers / SDETs on the team via individual consulting and code reviews.

  • Perform additional duties as assigned.


  • Bachelor’s degree in Computer Science or related discipline, or equivalent work experience required.

  • Minimum five years of experience designing test plans, cases and writing automated tests in a team environment required.

  • Experience testing applications and services with security automation frameworks preferred.

  • Demonstrated experience developing and designing testing and automation frameworks supporting multiple application platforms.

  • Minimum five years of hands-on experience with programming and scripting languages such as C#, Python or JavaScript/Typescript and software development/QA in a Windows environment. Proficiency with test frameworks such as Nunit, MSTest, Xunit, jest, puppeteer, mocka, pytest, unittest, Specflow, Selenium, or Gherkin required.

  • Minimum four years of experience with continuous integration systems and test case management tools required.

  • Demonstrated experience in unit testing, integration testing and performance testing.

  • Experience using git, including performing code reviews, pull requests, and following branching standards such as Git Flow or Trunk-Based Development required.

  • Demonstrated experience of relational database structures. Able to understand and construct SQL queries.

  • Proficient verbal and written skills to effectively communicate.

  • Full time hours required.

EEO Statement:

BECU is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, veteran status, disability, sexual orientation, gender identity, or any other protected status.

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From our very beginning, BECU has been about people helping people. As a financial services cooperative, our purpose has and always will be the same: we work together to best serve our members and improve the financial well-being of our community. More than 80 years and one million members later, we're still rooted in our values, practices and mission - and even more passionate about our future.

As one of the nation's leading credit unions, we're not driven by profit. We're owned by our members and their interests are at the core of everything we do. Now we're growing faster than ever before--but we'll never forget our roots. To continue doing right by our members, we believe we must first do right by our people. Here, you'll receive the resources and support you need to learn, grow and build a meaningful career. Because we know it's our people who make us special.