Testing new capabilities, documenting new features, and analyzing simulation performance. Develop, document, and execute test cases, test scripts, and test plans to validate software functionality, performance, and compliance with requirements and acceptance criteria. Supporting agile software team within the context of a larger team Supporting the development of simulation and software architecture Researching technical details related to various missile defense systems to better support software development and testing Execute and support system integration testing, regression testing, performance testing, and end-to-end testing for software solutions. Contribute to sprint planning by estimating testing tasks and working collaboratively with the team to ensure on-time delivery of quality deliverables. Work closely with systems engineers, software developers, and product owners to align on test objectives and outcomes. Provide hands-on training sessions for end-users to ensure proper understanding and utilization of the software. Identify opportunities to enhance test strategies, tools, and processes to improve team performance and software quality. Act as an advocate for quality within the development process, promoting best practices for testing and validation. The selected candidate should thrive in a fast-paced work environment with high expectations, significantly diverse assignments, and collaborative/team settings across all levels. Bachelor's Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline from an accredited university and 2 years of related experience, or a Master's Degree in a STEM discipline and 0 years of related experience A current active U.S. Government DoD Secret security clearance Ability to adapt to ambiguity, take initiative, and effectively work both independently and collaboratively within a team-oriented environment Strong, written, verbal and interpersonal communication skills to collaborate effectively with technical teams and customer personnel Familiarity with Agile software development practices Understanding of software development and Linux platform Proficiency in at least one programming/scripting language (e.g., Python, Java, or JavaScript). Experience in Developing / executing test plans, Test Cases, Test Reports, Performance metrics and all the other basic TE function Demonstrated experience verifying and validating system and software requirements, ensuring traceability and creating detailed test artifacts (e.g., test plans, test cases, and test reports). Proficient in developing and executing test plans, test cases, test reports, and analyzing performance metrics. Experience with Systems Engineering V-lifecycle processes, including requirements decomposition, verification, and validation to ensure compliance at both system and software levels. Proficiency in developing and maintaining requirements traceability matrices and aligning test plans, cases, and reports with system-level verification objectives. Experience or knowledge of Bash, Git, Docker / Podman, Testing REST APIs and Experience in agile software development methodologies including Scrum, Kanban, and Scaled Agile Framework (SAFe) Experience with large code base M&S systems using an optimistic and/or conservative discrete event simulation platform Knowledge or experience in several of the following: missile defense domain knowledge, command and control, and modeling and simulation development Experience with Atlassian tools such as JIRA, confluence Familiarity with cybersecurity concepts Familiarity with DevOps principles / software Experience in Jenkins, Github, Bitbucket, SonarQube, CAMEO, C# / ASP.NET, Curl commands, Automated API testing Microservices architecture understanding. Experience working with CI/CD pipelines and integrating tests into the delivery process. Familiarity with API protocols and tools (e.g., JSON, REST, gRPC, Postman, Swagger/OpenAPI). Understanding of HTTP/HTTPS protocols, authentication mechanisms (OAuth, JWT).