Operating Systems Test Engineer

Leidos; Orlando (FL); On-site; USD 92,000 - 167,000; Full time

Benefits offered by this job

Competitive compensation

Health and Wellness programs

Income Protection

Paid Leave and Retirement

Job summary

Leidos in Orlando, FL is seeking an experienced Operating Systems Test Engineer to support the ABMS DI Network Manager program. This on-site role requires daily presence at the Orlando office and involves maintaining DI-NIL lab infrastructure, managing configurations, and ensuring DoD compliance across Linux and Windows systems.

You will perform verification and validation testing from build to deployment, develop build documentation, implement access controls, and collaborate with customers to

Qualifications

• Bachelor’s degree required with 8+ years of related experience; additional experience may be considered in lieu of a degree.
• US Citizen; active DoD Secret clearance with ability to upgrade to TS/SCI upon hire.
• DoD 8140 IAT Level II certification (Security+) required.
• Experience with Active Directory deployment/configuration, OU creation, and RBAC-driven security controls.
• Proven Linux/Unix (RHEL) expertise; strong system concepts for DoD programs.
• Experience in design reviews and providing customer-centric input.
• Excellent written and verbal communication for cross-functional collaboration.
• Ability to work with diverse technical backgrounds and cross-functional planning.

Responsibilities

• Maintain and support the DI-NIL architecture and services (RHEL, Windows, appliances).
• Manage configurations, compliance enforcement, and directory service integrations.
• Conduct Verification & Validation testing from initial build to deployment.
• Ensure DoD compliance and perform patch/version upgrade testing.
• Document system builds and processes for auditability and repeatability.
• Configure operating systems with access controls and least-privilege access.
• Support DI-NIL team efforts across system verification and validation.

Skills

RHEL Linux

Active Directory

IAT Level II (Security+)

ACAS/Nessus

System testing

Education

Bachelor's degree

Master's degree

Tools

Jira

Confluence

Job description

Position: Operating Systems Test Engineer Location: Orlando, FL

Make an Impact with Leidos At Leidos, we deliver innovative solutions through the dedication of our diverse and talented teams. United by a shared commitment to our customers' success, we empower our people, support our communities, and operate sustainably. Our Mission, Vision, and Values guide every aspect of our work, ensuring we do the right thing—for our customers, our people, and the world around us.

Thrive in a Mission-Focused Environment

The Leidos Defense Sector provides advanced systems, solutions, and services across land, sea, air, space, and cyberspace. From enterprise IT and large-scale intelligence systems to cybersecurity, geospatial analytics, logistics, and training, we support some of the nation’s most critical defense missions. Our teams take on challenges where failure is not an option—and succeed. We are seeking an experienced Operating Systems Test Engineer to support our ABMS DI Network Manager (DINM) program located in Orlando, FL. This role is part of a team supporting the Department of the Air Force's Air Battle Management System and its associated digital infrastructure. This is an on-site role requiring daily presence at our Orlando, FL office.

Primary Responsibilities

• 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.

Basic Qualifications

• 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.

Preferred Qualifications

• 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.

Pay Range

Pay Range: Pay Range $92,300.00 - $166,850.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers.

• Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement.

More details are available here.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.