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Sr. Network Engineer
Location: Deerfield, IL
PERM
Interview: Video / F2F
Start: ASAP

The Senior Network Engineer is responsible for the technologies used in enterprise-wide connectivity. Connectivity solutions include LAN, WAN, MPLS, Cellular and various Telephony solutions. He or she will contribute to operations and projects of these technologies as well as demonstrate continual improvement.

Responsibilities:

• Assists in the design, implementation, and documentation of:
  • a complex global network infrastructure connecting on-premise systems, cloud services, corporate offices, and remote workers
  • a dynamic desktop and mobile computing environment
  • a VoIP telephony system (Cisco UC)
• Acts as a technical point-person for network related project initiatives as well as all operational network service delivery, for example: cloud-based computing initiatives, network availability, partner connectivity, carrier connectivity, root cause analysis, etc.
• Configures Horizon network equipment, including, but not limited to:
  • Switches & Routers
  • Wireless LAN devices and systems
  • Telephony Hardware and Software
• Monitors network metrics and performance indicators
• Contributes to life-cycle projects for network hardware, software, and services, including commissioning, support & maintenance, upgrades, and decommissioning
• Contributes to the maintenance of public domain names, their DNS, and certificates
• Participates in an on-call rotation and ability to perform maintenance, troubleshooting, and upgrades of all technologies mentioned within and outside of business hours
• Interacts with all levels of staff when handling IT Support escalations
• Continually seeks to improve operations by suggesting enhancements and/or changes to current processes and technologies
• Manages time efficiently in order to multitask project activity alongside daily operational tasks
• Interfaces with partners, consultants, and vendors
• Support other IT initiatives as assigned
• Occasional travel to sites hosting Horizon infrastructure

Qualifications and Skills Required:

• 5+ years of progressive IT experience
• 5+ years of direct hands-on experience managing and configuring network equipment including but not limited to switches, routers, firewalls, wireless access points
• Experience supporting a 24x7x365 production environment
• Experience working with virtualized server environments such as VMware and Nutanix
• Experience with Cisco Catalyst switches, Nexus switches, and ISR router platforms
• Experience working with service providers (AT&T, Verizon, etc.)
• Cisco CCNA or equivalent preferred
• Hands-on experience and/or capability working with the following technologies and skillsets:
  • Local area network technologies (switching, routing, firewalls, wireless)
  • Advanced network concepts (e.g., SD-WAN, network segmentation, VLANs, policy-based routing, QoS)
  • Network Access Control (RADIUS, 802.1X, Windows NPS, Cisco ISE, etc.)
  • Dynamic routing protocols (EIGRP, OSPF, BGP)
  • VPN (Site-to-Site, Remote Access, SSL)
  • Basic networking technologies such as DNS, DHCP, NTP
  • Programming or scripting languages for use in automating tasks
  • Cisco VoIP and Video (CUCM, Unity Connection, CER, etc.)

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