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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Operating Systems Test Engineer - **Company:** Leidos, Inc. - **Location:** Orlando, FL, United States - **Experience:** Experienced - **Salary:** $92,300.0 - $166,850.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Confluence, JIRA, Automation of Tests, Cloud Computing, Network Architecture, Networking Basics, Role-Based Access Control, Red Hat Enterprise Linux, Verification and Validation (Software), Systems Integration, Computer Networking Systems, Computer Network Technologies, Build Management, Atlassian Tools, Nessus, Enterprise Integration, Multiaccess Edge Computing - **Published:** September 3, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9137968/operating-systems-test-engineer ## About the Role * Bachelor's degree and 8+ years of related experience Additional experience may be considered in lieu of a degree. * US Citizen; Currently possessing an active DoD Secret clearance with ability to upgrade to a TS/SCI clearance upon hire. * Possess DoD 8140 IAT Level II certification Security+ * Demonstrable knowledge of operating systems concepts and applying these concepts to Department of Defense programs * Experience with Active Directory deployment/configuration, OU creation, and RBAC-driven security controls. * Proven expertise with Linux/Unix systems (RHEL). * Demonstrable experience in design review participation and providing customer centric input. * Excellent written and verbal communication skills for collaboration across diverse technical and non-technical stakeholders. * Demonstrated ability to participate in cross-functional planning and system integration activities. * Ability to work effectively with individuals of varying technical backgrounds. * Foundational knowledge of networking systems and interconnections. * Experience with government system security testing (ACAS/Nessus) and remediation. * Demonstrated ability to brief technical and non-technical customers. * Understanding of networking principles and basic network troubleshooting from the systems perspective, * Master's degree with 8+ years of relevant experience. * Active TS/SCI clearance. * Experience with ABMS or JADC2 initiatives. * Mid-level networking knowledge. * Minimum 4 years of DoD system security testing (ACAS/Nessus) and remediation. * Experience designing and deploying networks. * Experience with SAFe Agile frameworks and use of agile tools (e.g., Jira, Confluence). * Prior support of Department of the Air Force programs. * Experience working with complex multi-domain systems. * Experience designing and validating Cloud, Edge Computing, and network architectures. * Demonstrated knowledge of test automation and test result analysis. * Experience developing test methodologies, test specifications, and executing integration, verification, and validation activities. * Strong focus on customer satisfaction and maintaining Leidos' positive brand reputation. ## Description * Maintain and support the Digital Infrastructure Network Integration Lab (DI-NIL) architecture and services, including RHEL, Windows, and various systems/appliances. * Manage configurations, compliance enforcement, directory service integrations, and daily operational oversight. * Conduct Verification & Validation (V&V) testing for all systems designed for the production network-from initial build through configuration and service delivery. * Ensure all operating systems meet strict DoD compliance requirements and perform optimally, including patch, version upgrade testing, and deployment. * Develop complete documentation of system builds, configurations, and process workflows to ensure consistency, repeatability, and auditability. * Work directly with customers to configure required operating systems, establish appropriate access controls, and support a least-privilege environment. * Support additional DI-NIL team efforts, including assisting personnel conducting system verification and validation across the Digital Infrastructure Network. ## Related Videos - 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