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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Systems Test Engineer - Level 3 or 4 - **Company:** Northrop Grumman - **Location:** Aurora, CO, United States - **Experience:** Experienced - **Salary:** $103,600 - $155,400 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Agile Methodology, Systems Engineering, Automation of Tests, Bash Shell, Continuous Integration, Data Validation, Elasticsearch, Identity and Access Management, Integrated Development Environments, Junit, Python (Programming Language), CURL, MongoDB, OAuth, OpenID, Scrum Methodology, Swagger, Selenium, Shell Script, SQL Databases, Test Execution Engine, Strategies of Testing, Web Applications, Openapi, Okta, Postman, ReactJS, Spring-boot, Cypress (Programming Language), Backend, Data Layers, Kubernetes, Playwright, Data Management, JestJS, Restful APIs, Docker, Jenkins - **Published:** November 11, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9307691/systems-test-engineer-level-3-or-4 ## About the Role * Must have an active Top Secret/SCI clearance at time of application * Bachelor's degree with 8 years of relevant experience - OR - Master's degree with 6 years of relevant experience - OR - PhD with 4 years of relevant experience. An additional 4 years of relevant experience may be considered in lieu of a degree. * Experience defining clear, measurable test objectives from test requirements, user stories, acceptance criteria, and technical documentation. * Ability to design detailed test cases, test procedures, and verification steps from technical specifications. * Proven experience executing functional, regression, and end-to-end testing for developer-delivered software changes. * Demonstrated skill in isolating, reproducing, troubleshooting, and documenting defects with precision and actionable defect reports. * Experience with automated testing tools and shell scripting languages such as Python, Bash, or similar. * Experience testing REST APIs, service interfaces, and data-driven workflows using tools such as Postman, Swagger/OpenAPI, curl, or equivalent. * Ability to read and interpret application, service, container, and system logs. * Strong written and verbal communication skills and ability to collaborate effectively., * Experience working within an Agile/Scrum development environment. * Experience working with requirements development, including refining, clarifying, and decomposing requirements. * Demonstrated ability to implement process improvements, streamline verification activities, and develop efficiencies across the test lifecycle. * Experience with automated test frameworks such as JUnit, Jest, Vitest, Selenium, Cypress, Playwright, or comparable tools. * Experience supporting CI/CD-based test execution and pipeline troubleshooting using tools such as Jenkins or similar build and deployment systems. * Experience validating backend services and modern web applications built with technologies such as Spring Boot and React. * Experience performing data validation and query-based verification using MongoDB, Elasticsearch, SQL, or related data platforms. * Experience testing authentication, authorization, and role-based access controls, including OAuth2, OIDC, Keycloak, or similar identity solutions. * Experience working in Docker, Kubernetes, Helm, or other containerized deployment environments. * Ability to challenge requirements and solutions constructively to improve testability, supportability, and overall quality. #COSpace #SPEnhancedERAP ## Description We are seeking mid- to senior-level Systems Test Engineers (Level 3 and Level 4) to join an Agile development team delivering mission-critical capabilities. In this role, you will define test objectives, design and execute manual and automated tests, and work closely with developers, product owners, and systems engineers to ensure high-quality, reliable software deliveries. Level 4 engineers are also expected to provide technical leadership, mentorship, and contribute to test strategy and process improvements across the team., * Participate as a core member of an Agile/Scrum team, supporting sprint planning, daily stand-ups, reviews, and retrospectives. * Analyze test requirements, user stories, acceptance criteria, and technical documentation to define clear, measurable test objectives. * Design detailed test cases, test procedures, and verification steps based on technical specifications and interface definitions. * Execute functional, regression, and end-to-end tests for developer-delivered software changes across web, service, and data layers. * Isolate, reproduce, troubleshoot, and document defects with clear, actionable defect reports. * Develop, maintain, and execute automated tests and scripts using tools and languages such as Python, Bash, or similar. * Test REST APIs, service interfaces, and data-driven workflows using tools such as Postman, Swagger/OpenAPI, Curl, or equivalent. * Review and interpret application, service, container, and system logs to support troubleshooting and root-cause analysis. * Collaborate closely with developers, product owners, scrum masters, and systems engineers to clarify requirements, improve testability, and drive quality throughout the lifecycle. * Contribute to continuous improvement of test strategies, tooling, and processes; Level 4 engineers lead and champion these improvements across the program.