Design and execute manual and automated tests for web-based and data-centric applications on a large-scale analytics platform. Validate performance, reliability, scalability, data integrity, and usability across distributed systems. Collaborate with engineering and DevOps teams to resolve defects and support Agile and CI/CD quality processes. Requires U.S. citizenship and an active TS/SCI clearance; work at a SCIF at least three days per week. Responsibilities Design, develop, and execute manual and automated test plans, cases, and procedures. Test application functionality, performance, scalability, reliability, and usability. Perform integration, regression, system, and user acceptance testing across distributed environments. Document, track, and verify software defects using issue tracking tools. Collaborate with engineering, product, systems, and Dev Ops teams to troubleshoot and resolve issues. Verify data integrity and pipeline flows, support CI/CD testing, and document test processes. Required Skills Manual testing Automated testing Web application testing API testing Distributed systems testing Performance testing Security testing Test automation scripting Defect tracking Data integrity validation