Infrastructure Engineering Senior Analyst, Networking - Cigna Healthcare

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

Help build and protect the network foundation that keeps our business connected. In this role, you will bring deep technical judgment, curiosity, and a continuous-improvement mindset to a large-scale enterprise environment. You will partner across infrastructure, security, cloud, and application teams to strengthen performance, resilience, and secure access for critical business services.

Responsibilities

• Design, implement, and improve enterprise LAN, WAN, SD-WAN, wireless, and remote-access solutions that deliver reliable, scalable connectivity.
• Configure and support routers, switches, firewalls, load balancers, VPNs, wireless access points, and other network appliances.
• Monitor availability, traffic, and capacity; use data and enterprise monitoring tools to identify risks and improve network performance.
• Lead troubleshooting and root-cause analysis for complex routing, switching, DNS, DHCP, authentication, and connectivity issues, restoring service with urgency and care.
• Strengthen network security by maintaining firewall policies, segmentation, IDS/IPS, NAC, and VPN controls; contribute to vulnerability remediation, hardening, and incident response.
• Partner with server, storage, cloud, security, application, and directory-services teams to integrate network requirements into projects and technology refreshes.
• Coordinate effectively with vendors, service providers, and internal stakeholders during incidents, changes, and planned implementations.
• Maintain accurate network diagrams, inventories, standards, operating procedures, and troubleshooting guides to make knowledge easy to share and reuse.
• Recommend practical improvements that increase reliability, security, performance, and operational efficiency while supporting change-management standards.

Required Qualifications

• 5 or more years of experience supporting, operating, and managing enterprise network infrastructure in large-scale environments.
• Hands-on experience with routing, switching, firewalls, load balancers, wireless networking, SD-WAN, and site-to-site and remote-access VPN technologies.
• Strong knowledge of TCP/IP, TCP/UDP ports, DNS, DHCP, VLANs, network segmentation, performance tuning, and secure network design.
• Experience diagnosing complex outages and performance issues, completing root-cause analysis, and supporting critical business services.
• Ability to work independently, communicate clearly, manage competing priorities, and collaborate across technical and business teams.
• Current CCNA certification.

Preferred Qualifications

• Bachelor’s degree in computer science, information technology, or a related field.
• AWS networking or cloud certification; Azure or Oracle Cloud Infrastructure certification is also valued.
• Experience supporting data center, virtualization, cloud, and enterprise directory-services initiatives.
• Experience with network architecture planning, capacity analysis, technology refreshes, and formal change-management processes.

Since 1981, Allegiance by Cigna Healthcare has specialized in the administration of medical benefits, offering core services such as claims processing, customer service, utilization management, and case management. Backed by a unique high-touch approach to both member and client service, Allegiance supports and administers some of the nation’s most innovative approaches to Health Plan benefits.

If you will be working at home occasionally or permanently, the internet connection must be obtained through a cable broadband or fiber optic internet service provider with speeds of at least 10Mbps download/5Mbps upload.

About Cigna Healthcare

Cigna Healthcare, a division of The Cigna Group, is an advocate for better health through every stage of life. We guide our customers through the health care system, empowering them with the information and insight they need to make the best choices for improving their health and vitality. Join us in driving growth and improving lives.

Qualified applicants will be considered without regard to race, color, age, disability, sex, childbirth (including pregnancy) or related medical conditions including but not limited to lactation, sexual orientation, gender identity or expression, veteran or military status, religion, national origin, ancestry, marital or familial status, genetic information, status with regard to public assistance, citizenship status or any other characteristic protected by applicable equal employment opportunity laws.

If you need a reasonable accommodation to complete the online application process, please email [e-mail] for assistance. Please note that this email inbox is dedicated to accommodation requests only and cannot provide application updates or accept resumes.

The Cigna Group has a tobacco-free policy and reserves the right not to hire tobacco/nicotine users in states where that is legally permissible. Candidates in such states who use tobacco/nicotine will not be considered for employment unless they enter a qualifying smoking cessation program prior to the start of their employment. These states include: Alabama, Alaska, Arizona, Arkansas, Delaware, Florida, Georgia, Hawaii, Idaho, Iowa, Kansas, Maryland, Massachusetts, Michigan, Nebraska, Ohio, Pennsylvania, Texas, Utah, Vermont, and Washington State.

Qualified applicants with criminal histories will be considered for employment in a manner consistent with all federal, state and local ordinances.