Senior Network Engineer

Addison Group; Chicago (IL); On-site; USD 110,000 - 140,000; Full time

Job summary

Addison Group is partnering with a large healthcare organization in Chicago to expand its Network Engineering team as it modernizes its enterprise network. The Senior Network Engineer will troubleshoot and design enterprise networks, with hands-on Cisco and Juniper experience, across a large, highly available environment and new facility projects.

You will help build network infrastructure for hospital facilities, monitor performance, own technical projects, and participate in on-call rotations

Qualifications

• 5+ years of enterprise network engineering experience.
• Strong hands-on Cisco routing and switching experience.
• Experience with Juniper networking and enterprise wired/wireless infra.
• Experience supporting large, complex or highly available networks.
• Cisco certifications and network monitoring, packet analysis, QoS, scripting are a plus.

Responsibilities

• Design, implement, maintain and troubleshoot enterprise network infrastructure.
• Support Cisco routing, switching, wired and wireless networking across a large, highly available environment.
• Assist in Juniper-to-Cisco network migration and onboarding of devices.
• Troubleshoot routing, switching, wireless and connectivity issues.
• Provide network documentation, diagrams and standards; collaborate across teams.

Skills

Cisco routing

Cisco switching

Juniper networking

Enterprise networking

Network troubleshooting

Documentation

On-call support

Tools

Webex Cloud

Job description

A large, complex healthcare organization is expanding its Network Engineering team as it undertakes a significant modernization of its enterprise network infrastructure.

This is a hands‑on Senior Network Engineer opportunity for someone who can independently troubleshoot enterprise networking environments, work across Cisco and Juniper technologies.

You will also have the opportunity to support network infrastructure for new facility construction, including the design and buildout of user‑side network infrastructure.

What You’ll Do

• Design, implement, maintain and troubleshoot enterprise network infrastructure.
• Support Cisco routing, switching, wired and wireless networking across a large, highly available environment.
• Support and help execute the organization’s Juniper-to-Cisco network migration.
• Troubleshoot complex routing, switching, wireless and connectivity issues.
• Support WAN routers, enterprise edge infrastructure, satellite sites and network device onboarding.
• Participate in network engineering and infrastructure projects, including new facility construction.
• Help design and build network infrastructure supporting new hospital facilities.
• Monitor network performance, availability and capacity.
• Use network inspection and packet-analysis tools to diagnose difficult issues.
• Support network infrastructure within IDFs and other network/technology spaces.
• Maintain network documentation, procedures, diagrams and technical standards.
• Work with security, voice, systems and other technology teams on enterprise infrastructure initiatives.
• Coordinate with vendors and other technical partners.
• Take ownership of assigned technical projects and deliver with minimal supervision.
• Participate in scheduled on-call responsibilities.

What We’re Looking For

• 5+ years of enterprise network engineering experience
• Strong hands‑on Cisco routing and switching experience
• Experience working with Juniper networking
• Experience supporting enterprise wired and wireless infrastructure
• Strong understanding of:
• TCP/IP
• VLANs
• Routing protocols
• Switching
• DNS/DHCP
• WAN/LAN
• Experience supporting large, complex or highly available network environments
• Experience with Webex Cloud
• Strong troubleshooting and problem-solving skills
• Ability to independently own technical assignments and projects
• Strong communication and technical documentation skills

Healthcare experience is preferred but not required.

Cisco certifications and experience with network monitoring, packet analysis, VoIP/QoS, scripting or network automation are additional pluses.