Senior System/Network Administrator – Systems Integration

Leidos; Laurel (MD); On-site; USD 116,000 - 210,000; Full time

Benefits offered by this job

Health benefits

Retirement

Paid leave

Job summary

Leidos is seeking a highly experienced Senior System/Network Administrator – Systems Integration to support the implementation, operation, troubleshooting, and maintenance of complex IT systems and infrastructure in Laurel, MD. You will administer Linux, UNIX, and Windows environments, build and maintain virtual/storage environments, configure networks, and resolve complex integration issues.

The role requires deep experience with SOA environments and the ability to design and troubleshoot

Qualifications

• Active TS/SCI with Polygraph clearance required at time of application.
• Bachelor's degree in a technical discipline from an accredited college or university.
• Fifteen (15) years of System/Network Administration experience or 15 years with the degree substitution accepted.

Responsibilities

• Manage daily configuration and operation of IT systems.
• Support implementation, troubleshooting, and maintenance of IT systems and infrastructure.
• Monitor and support day-to-day operations across client/server, storage, network, and related devices.
• Configure and manage Linux, UNIX, Windows, and other operating systems.
• Build, configure, monitor, and maintain virtual environments and storage environments.
• Analyze and resolve complex problems involving server hardware, applications, and software integration.

Skills

Linux

UNIX

Windows

Virtualization

Storage

Networking

SOA

Troubleshooting

System architecture

Education

Bachelor's degree in a technical discipline

15 years of System/Network Administration experience

Tools

Documentation Tools

Job description

Description

About Leidos

Leidos is a FORTUNE 500® company bringing a mix of innovative technology and sector expertise to customers in the national security, engineering, and health industries. We deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. Guided by our Mission, Vision, and Values, Leidos empowers its teams, contributes to its communities, and operates sustainably—always with a commitment to doing the right thing for our customers, our people, and our community.

The Leidos Intel Sector combines technology-enabled services and mission software capabilities to support Intelligence Community customers as they address evolving national security challenges.

About the Opportunity

Leidos is seeking a highly experienced Senior System/Network Administrator – Systems Integration to support the implementation, operation, troubleshooting, and maintenance of complex IT systems and infrastructure.

You will administer Linux, UNIX, and Windows environments; build and maintain virtual and storage environments; configure network components; resolve complex technical problems; and support reliable day-to-day infrastructure operations. At this level, you will also contribute to system and mission-architecture design, understand system-administration interdependencies within Service-Oriented Architecture (SOA) environments, and resolve complex integration issues spanning server hardware, applications, and software.

Why This Role Matters

Mission infrastructure depends not only on the reliability of individual systems, networks, storage platforms, and virtual environments, but also on how those components interact as part of a larger architecture.

As a Senior System/Network Administrator – Systems Integration, you will bring deep infrastructure experience to both operational administration and complex integration challenges, helping ensure interconnected systems and applications function effectively together.

What You'll Do

Systems, Network & Infrastructure Administration

• Manage daily configuration and operation of IT systems.
• Support implementation, troubleshooting, and maintenance of IT systems and associated infrastructure.
• Monitor and support day-to-day operations across client/server, storage, network, mobile, and related devices.
• Configure and manage Linux, UNIX, Windows, and other applicable operating systems.
• Install and load operating-system software, troubleshoot system issues, and maintain system integrity.
• Configure network components and implement operating-system enhancements to improve reliability and performance.
• Build, configure, monitor, and maintain virtual environments.
• Build, configure, monitor, and maintain storage environments.
• Optimize system operations and resource utilization and perform system-capacity analysis and planning.

Advanced Troubleshooting & User Support

• Provide in-depth troubleshooting of IT systems.
• Assist users in accessing and using IT systems.
• Provide Tier 1 Help Desk and Tier 2 escalation support for problem identification, diagnosis, and resolution.
• Support dispatch-system and hardware problems and remain engaged through resolution.
• Provide detailed analysis and feedback to agency management and internal customers for escalated tickets.
• Communicate system status, technical issues, and resolution progress to agency management and internal customers.

Systems Integration & Mission Architecture

• Support the design of systems, mission architecture, and associated hardware.
• Apply working knowledge of system-administration interdependencies within Service-Oriented Architecture (SOA) environments.
• Analyze and resolve complex problems involving server hardware, applications, and software integration.

Required Qualifications

Clearance

• Active TS/SCI with Polygraph, at time of Application, to be considered for the position.

Education & Experience

• Fifteen (15) years of System/Network Administration experience supporting programs and contracts of similar scope, type, and complexity.
• Bachelor's degree in a technical discipline from an accredited college or university.
• Five (5) additional years of System/Network Administration experience may be substituted for the bachelor's degree.

Original Posting:

August 24, 2026

Pay Range:

Pay Range $116,350.00 - $210,325.00

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, www.Leidos.com.

Pay and Benefits

• competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

More details are available at www.leidos.com/careers/pay-benefits.

Commitment to Non-Discrimination

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.