Network Vulnerability Remediation Engineer - Mid

About the role

Network Vulnerability Remediation Engineer - Mid-Level

Program: Army Global Unified Network (AGUN)

• Location: Remote | Up to 10% Travel, *Please be advised that during the interview, you will be required to keep your camera on, and your interviewer will be taking your picture for identification purposes, if an offer letter is extended to you.
• Clearance Required: Active Secret
• Citizenship: U.S. Citizenship Required
• Help Secure the U.S. Army's Global Network!
• Leidos has an immediate opening for a Mid-Level Network Vulnerability Remediation Engineer to support the Army Global Unified Network (AGUN) program.
• This is an exciting opportunity to help protect, secure, and modernize the Army's global enterprise network, ensuring critical military communications remain reliable and mission-ready.

In this remote role, you'll focus on identifying, analyzing, and remediating security vulnerabilities across enterprise network devices. You'll work with network engineers, cybersecurity teams, and mission partners to implement security patches, configuration updates, and risk mitigation solutions.

We're looking for someone with strong hands-on network engineering experience, network security expertise, and the ability to resolve vulnerabilities without disrupting mission-critical operations.

What You'll Do

• Analyze and remediate security vulnerabilities affecting enterprise network devices and infrastructure.
• 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.

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 $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.