Evaluate vulnerability findings, vendor security updates, patches, and recommended mitigation strategies.
Develop, test, and implement security patches, configuration changes, and vulnerability remediation solutions.
Execute approved network configuration changes and vendor updates through established ASI and change-management processes.
Support DoD security requirements, including STIG implementation and network hardening.
Collaborate with Information Assurance teams and the AGUN Cybersecurity Service Provider (CSSP) to address security risks and maintain compliance.
Troubleshoot network connectivity, performance, and security issues following remediation activities.
Perform network device upgrades, patching, configuration management, and lifecycle maintenance.
Develop vulnerability assessments, patch/upgrade analyses, mitigation configurations, testing results, and production release plans.
Document remediation activities, implementation results, and ticket closure evidence.
Maintain network configuration records, technical documentation, and operational procedures.
Work independently on assigned engineering tasks while collaborating with senior engineers on complex issues.
What We're Looking For
Active DoD Secret security clearance and U.S. citizenship.
Bachelor's degree in a related technical field with 4–8 years of relevant experience, or approximately 8–12 years of relevant experience without a degree.
DoD 8570/8140 IAT Level II certification (such as Security+) and an approved Computing Environment (CE) certification.
Hands-on experience with network device patching, firmware upgrades, configuration management, and vulnerability remediation.
Strong knowledge of enterprise networking, including LAN/WAN, BGP, TCP/UDP, IPSec, VPNs, Layer 2/Layer 3 routing, MPLS, and firewalls.
Experience with at least one network management platform, such as:Palo Alto PanoramaCisco PrimeCisco DNAJunos Space
Hands-on experience with at least two of the following:CiscoJuniperPalo AltoDell NetworkingRemote Access VPN (RAVPN)GlobalProtectAppGate
Experience implementing DoD STIGs and network security hardening.
Familiarity with SFTP, SSH, SCP, SNMP, and NTP.
Ability to troubleshoot and resolve moderately complex network issues.
Strong communication, documentation, and customer-facing skills.
Ability to work independently and collaborate with geographically dispersed technical teams.
Flexibility to work nonstandard shifts when required.
Willingness to travel up to 10%.
Preferred Qualifications
Experience supporting U.S. Army, DISA, or other DoD enterprise networks.
CCNA, CCNP, or equivalent networking certification.
Experience with network modernization, migration, or infrastructure transformation.
Hands-on experience with Cisco SD-WAN.
Experience configuring or supporting Palo Alto Next-Generation Firewalls (NGFW).
Familiarity with virtualized network infrastructure.
Knowledge of Git, GitLab CI/CD, Ansible, Terraform, or Puppet.
Basic Python scripting experience for network automation.
Experience supporting large, geographically dispersed enterprise networks.
Familiarity with DoD cybersecurity policies and compliance requirements.
Experience creating network diagrams, configuration records, and technical documentation.
Why Join Leidos?
At Leidos, you'll have the opportunity to apply your network engineering and cybersecurity expertise to a mission that directly supports the U.S. Army's global operations.
You'll work alongside experienced network engineers and cybersecurity professionals, solve complex security challenges, and help protect critical military infrastructure.
If you're a cleared Network Engineer with hands-on vulnerability remediation, patching, and network security experience, we'd like to hear from you!
Join Leidos and help secure the Army's global network. Apply today!
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 14, 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 $73,450.00 - $132,775.00
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.
