Network Vulnerability Remediation Engineer – Mid
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Job Description
Network Vulnerability Remediation Engineer securing Leidos’ U.S. Army enterprise network. Remediating vulnerabilities, patching devices, and implementing DoD security hardening.
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 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
Requirements:
- 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+
- 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: Palo Alto Panorama, Cisco Prime, Cisco DNA, or Junos Space
- Hands-on experience with at least two of: Cisco, Juniper, Palo Alto, Dell Networking, Remote Access VPN (RAVPN), GlobalProtect, or AppGate
- 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: experience supporting U.S. Army, DISA, or other DoD enterprise networks
- Preferred: CCNA, CCNP, or equivalent networking certification
- Preferred: experience with network modernization, migration, or infrastructure transformation
- Preferred: hands-on experience with Cisco SD-WAN
- Preferred: experience configuring or supporting Palo Alto Next-Generation Firewalls
- Preferred: familiarity with virtualized network infrastructure
- Preferred: knowledge of Git, GitLab CI/CD, Ansible, Terraform, or Puppet
- Preferred: basic Python scripting experience for network automation
- Preferred: experience supporting large, geographically dispersed enterprise networks
- Preferred: familiarity with DoD cybersecurity policies and compliance requirements
- Preferred: experience creating network diagrams, configuration records, and technical documentation
Benefits:
- Remote work arrangement
- Up to 10% travel
- Opportunity to support the U.S. Army's global operations
- Work alongside experienced network engineers and cybersecurity professionals
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