Journeyman Network Engineer

Omniscius Consulting; Arlington (VA); On-site; USD 90,000 - 120,000; Full time

Job summary

Omniscius Consulting seeks a Journeyman Network Administrator to support a DoD mission-critical environment in Arlington, VA. You will maintain secure enterprise network infrastructure across classified and unclassified domains and collaborate with engineers, cybersecurity pros, and government stakeholders to ensure availability, performance, and compliance.

The role involves troubleshooting Cisco switches, implementing STIGs, using DNAC and SolarWinds for monitoring, and supporting VMware ESXi

Qualifications

• Active DoD security clearances or eligibility are required.
• Experience administering enterprise Cisco network environments and troubleshooting complex setups.
• Familiarity with DISA STIG implementation and cybersecurity compliance.

Responsibilities

• Administer and maintain enterprise network infrastructure supporting classified and unclassified environments
• Troubleshoot Layer 1-3 connectivity issues including routing, VLANs, switch ports, and network performance
• Configure, update, and maintain Cisco switches, firmware, IOS upgrades, and configuration backups
• Monitor network health using SolarWinds and Cisco Catalyst Center (DNAC)
• Support VMware ESXi environments and Windows Server infrastructure
• Manage ForeScout network access control and Cisco ISE authentication services
• Troubleshoot IPv6 networking and wireless infrastructure
• Perform DISA STIG implementation, validation, and remediation activities
• Support vulnerability remediation efforts using ACAS findings in coordination with cybersecurity personnel
• Maintain network documentation, diagrams, SOPs, and asset inventories
• Resolve Tier III network incidents and support Help Desk escalations
• Participate in change management activities and maintain accurate technical documentation
• Provide occasional after-hours support within a 24x7 operational environment

Skills

DoD clearance

IAT Level II

Cisco network admin

TCP/IP

VLANs

IPv6

Routing & switching

Windows Server

VMware ESXi

SolarWinds

DNAC

ForeScout NAC

Education

High School Diploma or GED

Active DoD IAT Level II certification

Tools

Cisco IOS

SolarWinds

Cisco DNAC

ForeScout NAC

ACAS/Nessus/Tenable

eMASS/STIG tooling

Job description

We\'re seeking a Journeyman Network Administrator to support a mission-critical Department of Defense environment in Arlington, VA. In this role, you\'ll be responsible for maintaining secure enterprise network infrastructure supporting both classified and unclassified environments. You\'ll work alongside network engineers, cybersecurity professionals, and government stakeholders to ensure high availability, performance, and compliance across the enterprise.

If you\'re passionate about Cisco networking, troubleshooting complex enterprise environments, and supporting national security missions, we\'d like to hear from you.

What You\'ll Do

• Administer and maintain enterprise network infrastructure supporting classified and unclassified environments
• Troubleshoot Layer 1-3 connectivity issues including routing, VLANs, switch ports, and network performance
• Configure, update, and maintain Cisco switches, firmware, IOS upgrades, and configuration backups
• Monitor network health using SolarWinds and Cisco Catalyst Center (DNAC)
• Support VMware ESXi environments and Windows Server infrastructure
• Manage ForeScout network access control and Cisco ISE authentication services
• Troubleshoot IPv6 networking and wireless infrastructure
• Perform DISA STIG implementation, validation, and remediation activities
• Support vulnerability remediation efforts using ACAS findings in coordination with cybersecurity personnel
• Maintain network documentation, diagrams, SOPs, and asset inventories
• Resolve Tier III network incidents and support Help Desk escalations
• Participate in change management activities and maintain accurate technical documentation
• Provide occasional after-hours support within a 24x7 operational environment

Required Qualifications

• Active DoD Secret Clearance
• Ability to obtain and maintain a Top Secret/SCI clearance
• U.S. Citizenship
• High School Diploma or GED
• Active DoD IAT Level II certification (Security+, CCNA, Microsoft Windows Server Certification, or equivalent)
• Experience administering enterprise Cisco network environments
• Strong understanding of:
  • TCP/IP
  • VLANs
  • IPv6
  • Routing and switching
  • Network troubleshooting
• Experience with Cisco Catalyst Center (DNAC)
• Experience using SolarWinds for monitoring and troubleshooting
• Experience supporting ForeScout network visibility or access control
• Familiarity with DISA STIG implementation and cybersecurity compliance
• Experience documenting network architectures and technical procedures
• Strong analytical, troubleshooting, and communication skills
• Experience supporting DoD, Federal, or Intelligence Community networks preferred

Preferred Qualifications

• Active Secret Clearance with the ability to obtain Top Secret/SCI Clearance
• Five or more years of enterprise network administration experience
• Cisco and ForeScout certifications
• Experience with:
  • ServiceNow
  • Azure AD
  • Microsoft Intune
  • Office 365
  • Active Directory
  • DNS
  • DHCP
  • Group Policy
  • Windows Server Administration
• Experience supporting RMF-accredited environments
• Familiarity with ACAS, Nessus, Tenable, SCAP, STIG Viewer, eMASS, and vulnerability management tools
• Experience creating technical reports, outage summaries, and network diagrams
• Knowledge of cryptographic devices supporting classified networks