Software Developer in Test; SDET

Summary

King County Department of Information Technology (KCIT) is seeking Software Developers in Test (SDET) to join our team! The Software Developer in Test (SDET) will drive the quality, scalability, and reliability of our web and mobile applications through advanced test automation and performance validation. This role plays a critical part in supporting complex data migrations, API integrations, and low‑code platform testing by designing and implementing robust, reusable test frameworks.

The SDET will work closely with cross‑functional teams to integrate quality throughout the development lifecycle, enabling faster delivery without compromising standards. These positions are estimated for a duration of 3 years.

• Automate UI functional validation testing, focusing on user interactions and performance of the graphical user interface (e.g., textboxes, check boxes, buttons, images) in specific end‑to‑end user scenarios.
• Automate API functional validation testing, typically headless, focusing on the business logic of the application to verify interactions of many small components and their ability to integrate without issue in specific end‑to‑end user scenarios.
• Test migrated data of large volume effectively between SQL, Dataverse and Oracle, along with automated monitoring executables designed to run as background programs.
• Design and develop an automation framework for application program interfaces using open‑source libraries and C#.
• Analyze the performance of current KCIT applications, identify bottlenecks, create performance baseline tests and provide tuning recommendations.
• Design, develop high‑quality, maintainable, and performant code for automated test cases and frameworks to execute and report.
• Design and implement automated test pipelines within Azure Dev Ops to ensure seamless integration of quality gates across build, release, and deployment stages. Optimize CI/CD workflows by integrating test automation, performance validation, and environment provisioning.
• Work directly with software developers, business analysts, project managers, and product owners to ensure delivery of high‑quality applications.
• Participate in sprint planning by analyzing scope, evaluating requirements and risks, and providing estimates for test deliverables.
• Conduct testing on multiple browsers and platforms—including desktop, mobile, and networked devices.

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related technical field, or an equivalent combination of education and experience.
• Five+ years of experience in software quality engineering, with at least two years in a senior or lead SDET role.
• Microsoft certifications in Power Platform, Azure Dev Ops, or related technologies (preferred but not required).

• Demonstrated experience in test automation for low‑code/no‑code platforms, particularly Microsoft Power Platform (Power Apps, Power Automate, Dataverse).
• Experience working on government IT projects involving legacy system modernization, data migration, or digital transformation.
• Hands‑on experience with performance testing tools such as Stres Stimulus, JMeter, or Azure Load Testing.
• Strong background in API testing using tools like Postman, REST Assured, or similar.
• Experience validating large‑scale data migration projects, including data integrity, transformation logic, and reconciliation.
• Familiarity with CI/CD pipelines using Azure Dev Ops, including test integration and environment management.

• Deep understanding of software testing methodologies (unit, integration, system, regression, performance, and UAT).
• Knowledge of Power Platform architecture, connectors, Dataverse, and ALM practices.
• Experience with tools like Selenium, Playwright and Easy Repro.
• Proficiency in Visual Studio and Test Studio.
• Understanding of RESTful APIs, OAuth2 authentication, and JSON/XML data formats.
• Familiarity with data migration strategies, ETL processes, and data validation techniques.
• Awareness of security, compliance, and governance considerations in enterprise testing.

• Proficient in scripting and automation languages such as Power Shell, JavaScript, C#, or Python.
• Ability…