Senior Enterprise Network Engineer - LAN/WAN & SD-WAN

Cigna Healthcare; Missoula (MT); Hybrid; USD 110,000 - 140,000; Full time

Job summary

Cigna Healthcare seeks a seasoned network professional to design, implement, and optimize our enterprise LAN/WAN and SD-WAN infrastructure in a large-scale environment.

You will work with security, cloud, and application teams to strengthen reliability, performance, and secure access for critical business services, including site-to-site and remote-access VPNs and firewall policies. A CCNA is required, with a preference for a Bachelor’s degree in CS/IT.

Qualifications

• 5+ years of enterprise network infrastructure experience
• CCNA certification
• Experience with routing, switching, firewalls, VPNs, and WAN technologies
• Strong knowledge of TCP/IP, DNS, DHCP, VLANs, security design, and performance tuning

Responsibilities

• Design, implement, and improve enterprise LAN, WAN, SD-WAN, wireless, and remote-access solutions
• Configure and support routers, switches, firewalls, load balancers, VPNs, wireless APs, and other network appliances
• Monitor availability, traffic, and capacity using enterprise monitoring tools
• Lead troubleshooting and root-cause analysis for complex network issues
• Strengthen network security with firewall policies, segmentation, IDS/IPS, NAC, and VPN controls
• Collaborate with server, storage, cloud, security, and application teams on network requirements
• Coordinate with vendors and stakeholders during incidents and changes
• Maintain network diagrams, inventories, and standard operating procedures
• Recommend improvements to increase reliability, security, and performance

Skills

Networking

Routing & Switching

SD-WAN

Firewall & VPN

TCP/IP & DNS/DHCP

Incident Troubleshooting

Independent Working

Education

Bachelor's degree in CS/IT

Job description

Cigna Healthcare seeks a seasoned network professional to design, implement, and optimize our enterprise LAN/WAN and SD-WAN infrastructure in a large-scale environment.

You will work with security, cloud, and application teams to strengthen reliability, performance, and secure access for critical business services, including site-to-site and remote-access VPNs and firewall policies. A CCNA is required, with a preference for a Bachelor’s degree in CS/IT.