DoD Network Engineer II — JFN Operations

Cornerstone Defense LLC; Belleville (IL); On-site; USD 70,000 - 90,000; Full time

Benefits offered by this job

Medical, Dental and Vision Plans

401(k)

HSA and FSA options

Tuition Reimbursement

Job summary

Cornerstone Defense LLC is seeking a Network Engineer II for Joint Fires Network (JFN) at Scott AFB, IL. The role supports DISN transport and IP infrastructure in a 24x7 environment, coordinating with customers and government agencies to ensure mission-critical connectivity.

Required DoD Top Secret/IA readiness and IAT Level II certification. Strong experience with IP/Transport topologies, and hands-on work across routers, switches, and related network gear is essential.

Qualifications

• Bachelor's degree and 2+ years relevant experience, or equivalent education/experience.
• DoD-8570 IAT Level II certification (Security+ CE or equivalent) prior to start date.
• Ability to work in a 24x7 shift environment.
• Working knowledge of both IP and Transport network topologies.

Responsibilities

• Execute network operations including configuration, analysis, and support of customer circuits across optical platforms, multiplexers, routers, and switches.
• Perform real-time circuit redesign and alternate routing to restore connectivity during outages, maintenance, or service degradations.
• Coordinate with internal/external customers, government agencies, and engineering tiers to minimize mission impact and maintain operational readiness.
• Monitor network alarms using platform-specific management tools and proactively identify service-impacting conditions.
• Perform change-management actions including hardware replacement, software configuration updates, and ASI execution.
• Utilize incident management tools to document outages, degradations, escalation paths, troubleshooting steps, and full lifecycle resolution details.
• Identify and recommend corrective actions for network incidents leveraging knowledge of routers, switches, crypto devices, transport systems, Cisco, Juniper, MSPP, optical transport, MPLS, TDM, and SDH/SONET.

Skills

Network operations

Real-time troubleshooting

IP topology

Transport topology

DoD IAT II cert

24x7 shift

Education

Bachelor's degree

Tools

SolarWinds

Jira

Job description

Cornerstone Defense LLC is seeking a Network Engineer II for Joint Fires Network (JFN) at Scott AFB, IL. The role supports DISN transport and IP infrastructure in a 24x7 environment, coordinating with customers and government agencies to ensure mission-critical connectivity.

Required DoD Top Secret/IA readiness and IAT Level II certification. Strong experience with IP/Transport topologies, and hands-on work across routers, switches, and related network gear is essential.