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# Operating Systems Test Engineer

- **Company:** Leidos, Inc.
- **Location:** Alafaya, FL, United States
- **Experience:** Experienced
- **Salary:** $92,300 - $166,850
- **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:** October 19, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=56fac01beb9b5981

## About the Role

* Bachelor's degree with 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 6+ 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.