Backend Tester*

SierTeK proudly serves our clients by providing expertise in the Program Management, Information Technology, and Administrative Support domains. Founded in 2007 as a minority and service-disabled veteran-owned company, we serve as prime- and subcontractor for a multitude of Federal Department of Defense contracts. By focusing on continual improvement, our services remain at the forefront of our industry, and we pride ourselves on delivering our services with the highest degree of integrity.

SierTeK Ltd. is seeking a Backend Tester to support a remote opportunity (with preference for candidates based in Dayton, OH or the Washington DC area).

Position Overview Section

The Backend Tester will work remotely, focusing on the testing and validation of backend data changes across ETL workflows, databases, and APIs. This role is responsible for ensuring that data-related changes meet business requirements, maintain data integrity, and perform as expected across integrated systems. The Backend Tester will collaborate with developers, data engineers, analysts, and stakeholders to design and execute effective test coverage, identify issues, and support resolution efforts. A strong understanding of backend systems, data movement, and regression validation is essential.

Essential Job Functions

• Collaborate with the team to analyze and define system and data requirements, identifying opportunities for improvement
• Develop, maintain, and execute test cases for backend data changes, including ETL, database, and API testing
• Validate data transformation logic, data movement, schema changes, and interface behavior across source and target systems
• Design test approaches to ensure adequate coverage of backend changes and regression impact
• Identify, document, and track defects, data inconsistencies, and integration issues through resolution
• Create and maintain test data, test evidence, and supporting test documentation
• Work closely with developers,...