Network Engineer II

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. 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.

* Shift Hours: Swing Shift (3pm – 11pm) Monday - Friday *

Primary Responsibilities

Responsible for performing 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 tasks to align with customer specifications.
• Control network systems to ensure 99% or better system uptime and connectivity.
• Ensure efficient delivery of contract capabilities using industry standards and repeatable processes.
• 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.

• Currently possess an active DoD Secret security clearance.
• 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.

Preferred Qualifications

• Equally proficient in Juniper and 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.
• Extensive 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.

Required Education and Experience

Requires BS degree and 2-4 years of prior relevant experience or Masters with less than 2 years of prior relevant experience. (Or equivalent combination of education and/or experience.)

GSMO

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:

November 10, 2026

Pay Range:

Pay Range $59,150.00 - $106,925.00

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.