Description

Our customer, the Defense Information Systems Agency (DISA), provides, operates, and assures command and control of the Defense Information System Network (DISN) services to its customers, the department of Defense (DoD) and national security organizations. This position directly supports the DISA-provided capabilities and services.

The Leidos Digital Modernization Sector/Global Solutions Management-Operations II (GSMO-II) contract has an opening for a Network Engineer at Scott AFB, IL. The Network Engineer will perform sustainment, maintenance, Problem and Change management services to help ensure secure, reliable, and uninterrupted availability of the Department of Defense IP networks.

This position requires U.S. citizenship with ability to obtain Interim Secret clearance. An active Secret clearance is preferred.

Primary Responsibilities: Responsible for assisting with the following duties:

• Perform engineering tasks related to the design, implementation, and integration of network changes and sustainment of customer systems in an Wide Area Network environment.
• Conduct planning and performance of analytical research, design development, and other manager assigned tasks to align with customer specifications.
• Proactively monitor in the control network systems to ensure 99% or better system uptime and connectivity.
• Ensure efficient delivery of contract capabilities using industry standards and repeatable processes.
• Provide recommendations to mitigate risks, control costs and schedule variance, and effectively manage large scale, integrated projects.
• Perform a variety of analytical tasks which include hardware and software design and implementation.

Basic Qualifications:

• Currently possess DoD 8750 certification at IAT level II, Security+ CE or equivalent to meet requirement.
• Experience analyzing VLAN, routing, IP addressing and sub-netting.
• Experience with Palo Alto firewalls, F5 appliances, and Splunk systems
• Experience troubleshooting and configuring IP networks using at least one of the following routing methods: BGP, ISIS or OSPF, Static routing.
• Experience with either service provider or enterprise IP networks using an interface on Cisco (ESR and ASR) and/or Juniper routers.
• Experience with ports and protocols.
• Ability to obtain a DoD Secret security clearance.

Preferred Qualifications:

• Proficient in either Juniper or Cisco configuration, troubleshooting, and design.
• Experience with Cisco IOS XR, JUNOS, and Cisco IOS codes.
• Pearl or other language scripting capable of running backup confits and other scripting to pull information from Cisco/Juniper routers
• IPSEC configuration, troubleshooting, and design experience.
• MPLS configuration, troubleshooting, and design experience.
• IPV6 configuration, troubleshooting, and design experience.
• Security certification and/or knowledge of DDoS and other attack vectors experienced in today' networks.
• Crypto configuration, troubleshooting, and design experience.
• Layer 2/3 VPN and Firewall knowledge and experience.
• Physical cable plant and wiring experience.
• Certifications with major network system vendors such as Cisco are a strong plus.
• Excellent project, technical, interpersonal, presentation and problem management skills.
• Network integration experience for a variety of network protocol standards.
• Ability to communicate orally, and in writing, detailed technical information on troubleshooting and implementation efforts.
• Familiarization of DOD regulations and directives.
• Currently possess an active DoD Secret security clearance.

Required Education and Experience:

• Requires BS degree or equivalent experience and less than 2 years prior relevant experience.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting:
May 15, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:
Pay Range $50,700.00 - $91,650.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

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.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

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.