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Cornerstone Defense · 1 week ago

Sr. QA Tester II

USA

Contract

Onsite

Senior Level

5+ years exp

Cornerstone Defense is a leading employer in the Intelligence, Defense, and Space communities of the U.S. Government, focusing on supporting their employees' work/life experience. The Senior Quality Assurance Tester will perform comprehensive testing for mission-critical systems, ensuring compliance with security and performance standards while collaborating with various teams to validate data integrity and system functionality.

ArchitectureCloud InfrastructureInformation TechnologyNetwork Security

No H1B

Security Clearance Required

U.S. Citizen Only

Responsibilities

Perform comprehensive quality assurance testing for mission-critical engineering and data systems deployed in a classified AWS IL6+ environment, ensuring compliance with security and performance standards

Collaborate with developers, analysts, and cloud engineers to validate data integrity, troubleshoot workflows, and confirm that solutions meet rigorous functional and security requirements

Design, develop, and execute test plans, scripts, and automation frameworks to verify software functionality, error handling, and system logic across complex data workflows

Prepare and manage synthetic or obfuscated data sets for testing purposes, ensuring accurate validation of system behavior while maintaining strict data security protocols

Identify, isolate, and document defects, track resolutions, and verify fixes to maintain high-quality deliverables and operational reliability in classified environments

Qualification

Active TS/SCI + CI PolyTest automationAWS cloud environmentsTesting proceduresDefect trackingData preparationBachelor's degreeCollaboration skills

Required

Bachelor's degree ideally in an IT field or equivalent experience

Active TS/SCI + CI Poly

5+ years' experience evaluating and executing testing procedures to ensure that software meets established quality standards

5+ years' experience developing and writing testing scripts, plans, and test automation to ensure that software functions as expected

7+ years' experience in IT

Strong experience preparing complex data sets to test logic, error handling and system workflows, including experience generating synthetic data sets or obfuscating production data sets for use in testing

Strong experience isolating, reproducing, and tracking defects and verifying fixes

Extensive experience testing applications leveraging cloud services and deployed to classified AWS cloud environments at IL6+