Network Vulnerability Remediation Engineer - Mid

00100 LEIDOS, INC.; United States; Remote; USD 73,000 - 133,000; Full time

Benefits offered by this job

Health and Wellness programs

Paid leave

Retirement benefits

Job summary

Leidos is seeking a Mid-Level Network Vulnerability Remediation Engineer to support the Army Global Unified Network (AGUN) program. This remote role focuses on identifying, analyzing, and remediating security vulnerabilities across enterprise network devices, working with network engineers and cybersecurity teams to implement patches and mitigations.

You will perform remediation activities, configure changes, and ensure compliance with DoD requirements while collaborating with dispersed teams.

Qualifications

• Active DoD Secret clearance and U.S. citizenship required.
• Bachelor's degree in a related technical field with 4–8 years of relevant experience, or approximately 8–12 years without a degree.
• DoD 8570/8140 IAT Level II certification (Security+) and CE certification.

Responsibilities

• 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 ASI and change-management processes.
• Support DoD security requirements, including STIG implementation and network hardening.
• Collaborate with IA teams and AGUN CSSP to address risks and maintain compliance.
• Troubleshoot network connectivity, performance, and security issues after remediation.
• Perform network device upgrades, patching, configuration management, and lifecycle maintenance.
• Document remediation activities, results, and ticket closure evidence.
• Maintain configuration records and operational procedures.
• Work independently while coordinating with senior engineers on complex issues.

Skills

Active DoD Secret clearance

U.S. citizenship

DoD 8570/8140 IAT Level II (Security+)

Enterprise networking

Change management

Network remediation

Network protocols (SSH, SNMP, NTP)

Education

Bachelor's degree in a related technical field

Tools

Palo Alto Panorama

Cisco Prime

Cisco DNA

Junos Space

Cisco

Juniper

Palo Alto Networks

Dell Networking

Job description

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.

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.

Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting: November 14, 2026

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.

Pay and Benefits

• Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement.

More details are available here.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

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.

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 $17.2 billion for the fiscal year ended January 2, 2026.

For more information, visit www.Leidos.com.