Network Administrator - Morning Shift

Leidos; Arlington (VA); On-site; USD 73,000 - 133,000; Full time

Job summary

Leidos is seeking a Network Administrator (1st shift) to join the CESO effort in Rosslyn, VA. The role focuses on monitoring network performance, installing and securing devices, and ensuring uninterrupted access for users in a highly automated, secure environment.

Required TS/SCI clearance, DoD 8570 IAT II certification, a BS in CS/IT or commensurate experience, and willingness to work 24/7 shifts including nights and weekends. On-site in Rosslyn, VA with a pay range posted.

Qualifications

• BS in computer science or IT with 4+ years of experience; additional experience considered in lieu of degree.
• Active TS/SCI security clearance is required.
• DoD 8570 certification at least IAT level II (e.g., Security+ CE).
• Willing to work 24/7 shifts, including nights, weekends and holidays.
• Experience monitoring network performance, security and availability.
• Experience configuring switches and routers.
• Experience with dynamic routing protocols (BGP, OSPF).
• Ability to change and configure 802.1x.
• Experience troubleshooting S2S/IPsec tunnels.
• Experience conducting VLAN configurations.

Responsibilities

• Network monitoring of connections and performance to ensure availability for users.
• Identify risks and issues in the network and take mitigation actions.
• Plan, coordinate and implement network maintenance, installation and security.
• Receive and review user requests to resolve access issues.
• Troubleshoot and resolve network issues and escalate complex problems.
• Configure, install and maintain network devices and software.

Skills

Network monitoring

Security awareness

Time management

Education

BS in computer science or IT

Tools

BGP

OSPF

802.1x

S2S/IPsec

Job description

We are currently seeking a Network Administrator 1st Shift (6AM to 2PM) to join the Compartmented Enterprise Services Office (CESO) effort. This program is establishing a modern secure web service (SWS) operation as part of a state‑of‑the‑art, highly automated platform capable of supporting a rapidly expanding customer population.

This position is based in Rosslyn, VA and is 100% on-site.

Primary Responsibilities

• Network monitoring of connections and performance to ensure network availability for user access and services.
• Proactively identify risks and issues in the network and complete actions to mitigate them.
• Able to plan, coordinate and implement network maintenance, installation, and security to protect and improve network infrastructure.
• Receive and review user requests to establish or resolve issues with user access to services.
• Troubleshoot and resolve network issues and elevate complex problems to senior engineers or vendors
• Configure, install, and maintain network devices and software

Basic Qualifications

• Currently possess an active TS/SCI security clearance
• Currently possess DoD 8570 certification at least IAT level II, e.g Security+ce.
• BS in computer science or IT and 4+ years of experience. Additional experience may be considered in lieu of degree
• Comfortable working 24 7 shifts, including nights, weekends, and holidays.
• Experience monitoring network performance, security, and availability
• Experience in configuring switches and routers.
• Experience working with Dynamic routing protocols (BGP, OSPF)
• Ability to change and configure 802.1x
• Prior experience troubleshooting S2S/IPSEC tunnels connection.
• Experience conducting VLAN configurations

Preferred Qualifications

• Prior experience with DISA and DISA’s support to mission partners
• TS/SCI w/CI Poly Preferred
• AWS Cloud service experience
• Experience with Palo Alto devices

Original Posting

October 7, 2026

Pay Range

Pay Range $73,450.00 - $132,775.00

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, visit www.Leidos.com.

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 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.