Network Engineer II

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

Title: Network Engineer II - Joint Fires Network (JFN)

Location: Scott AFB, IL

Compensation Range: $70 - $90k

Clearance: Active DoD Top Secret required

Schedule: Rotating w/ 10% Travel

Company Overview

Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation's toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don't look any further than Cornerstone Defense.

Benefits Overview

• Medical, Dental and Vision Plans
• Generous PTO Policy
• 401(k)
• HSA and FSA options
• Life and Disability Insurance
• Tuition Reimbursement and Training
• Perks at Work Discount Program
• Referral Program
• Leads Generation Program
• CollegeAmerica 529
• Fitness Reimbursement Program
• Travel Assistance
• Norton Lifelock Benefit Solutions
• Life Planning Financial & Legal Services

Position Description

The Network Engineer II executes real-time network operations, analysis, troubleshooting, and change management across DISN transport and IP infrastructure. This role requires a blend of technical expertise, operational awareness, and customer-focused communication to maintain maximum network availability and support critical DoD missions. Engineers work in a 24x7 environment and coordinate directly with customers, government agencies, O&M teams, and higher-tier engineering organizations.

Core Tasks

• 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.

Qualifications

• Bachelor's degree and 2+ years relevant experience, or equivalent education/experience combination.
• 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.

Preferred

• Tech control facility or cyber transport experience.
• Experience with circuit actions, vendor coordination, and IP/Transport architecture.
• SolarWinds and Jira experience.
• Telco NOC, inside plant, or outside plant experience.
• Proficiency with MS Office Suite (Outlook, Excel, Word, Access, PowerPoint, Teams).
• Experience in one or more areas: alarm surveillance, fault management, LAN maintenance, performance management, change management.