Network Tier 3 Engineer

Duties & Responsibilities

• Provide advanced network analysis, design, engineering, and technical support for EACN infrastructure.
• Evaluate and recommend technologies that improve network performance, resilience, security, and mission capability.
• Maintain the EACN baseline configuration and supporting Systems Integration Laboratory environment.
• Install and functionally test software versions, patches, technical orders, security updates, and configuration changes.
• Validate hardware, software, and network modifications in the laboratory before operational deployment.
• Troubleshoot complex network issues affecting operational gateways, connected platforms, and supported mission systems.
• Configure and sustain routers, switches, firewalls, servers, encryption devices, VoIP components, and network-management tools.
• Support network upgrades, equipment replacement, system cutovers, and integration of new transport capabilities.
• Create scripts, executables, graphs, and maps supporting network configuration, monitoring, and analysis.
• Monitor network availability, utilization, outages, capacity, and overall system health.
• Perform system backups, disk management, patching, and approved server-maintenance activities.
• Design and implement fault-tolerant and disaster-recovery solutions for network devices and servers.
• Support Voice over Internet Protocol capabilities across the laboratory and operational gateway environments.
• Coincide technical activities with Government engineers, cybersecurity personnel, site technicians, and mission partners.
• Train incoming Government and contractor personnel on EACN network configurations and operating standards.
• Ensure network changes comply with DISA STIGs, USCYBERCOM directives, Air Force requirements, and approved configuration-management processes.

Qualifications

• Clearance Requirement: Must hold an active Top Secret clearance.
• Education: Bachelor’s degree in Information Technology, Computer Science, Network Engineering, Systems Engineering, or a related field.
• Experience: Minimum five years of relevant network engineering experience.
• Experience: Designing, configuring, troubleshooting, and sustaining enterprise LAN and WAN environments.
• Experience: Supporting routers, switches, firewalls, VLANs, VPNs, TCP/IP, network-management systems, and secure communications infrastructure.
• Experience: Working in classified or mission-critical Department of Defense environments preferred.
• Experience: Supporting geographically dispersed operational sites, test laboratories, or integration environments preferred.
• Technical Knowledge: Advanced knowledge of routing, switching, network architecture, troubleshooting, and performance optimization.
• Knowledge: Cisco network technologies, firewalls, encryption, SNMP, DNS, VLANs, VPNs, IPv4, and IPv6.
• Familiarity: Windows and Linux servers, virtualization, storage systems, and VoIP environments.
• Experience: Using network monitoring and analysis tools such as SolarWinds, Splunk, or comparable platforms.
• Familiarity: DISA STIGs, cybersecurity directives, configuration management, and laboratory-to-production testing processes.
• Experience: Developing scripts and automation supporting network configuration and analysis.
• Certifications: Cisco Certified Network Professional certification required at the time of contract award. Appropriate DoDM 8140.03 and IAT Level II certification required.
• Skills: Strong network troubleshooting and analytical abilities. Excellent technical documentation and communication skills. Ability to manage multiple engineering priorities and technical issues. Ability to collaborate with Government engineers, cybersecurity teams, and site personnel. Ability to perform duties on-site at Scott Air Force Base, Illinois, and travel as required.