Sr. Network Engineer

Gravity IT Resources; Tempe (AZ); On-site; USD 110,000 - 140,000; Full time

Job summary

Gravity IT Resources seeks a Senior Network Engineer to design, implement, and optimize enterprise network infrastructure across a geographically distributed environment in Tempe, AZ. You will ensure reliability, security, and performance of network services and support a mix of LAN/WAN, SD-WAN, and voice technologies.

The ideal candidate has hands-on Cisco experience, OT familiarity for manufacturing environments, and strong documentation and collaboration skills.

Qualifications

• 5+ years in network engineering or related infrastructure role.
• Experience with OT (Operational Technology).
• Strong Cisco networking experience including routers, switches, and firewalls.

Responsibilities

• Design, configure, implement, and maintain enterprise network infrastructure across multiple locations.
• Manage and troubleshoot Cisco routers, switches, firewalls, and wireless technologies.
• Support and optimize enterprise LAN/WAN and SD-WAN environments.
• Monitor network performance, availability, and capacity and proactively identify issues.
• Troubleshoot complex network connectivity, routing, switching, wireless, and security issues.
• Configure and maintain network security technologies and implement industry best practices.
• Support TCP/IP, DNS, DHCP, VLANs, VPNs, routing protocols, and other core networking technologies.
• Support enterprise voice technologies, including VoIP and Cisco CUCM.
• Implement and maintain network authentication and access-control technologies such as 802.1X.

Skills

Cisco networking

OT experience

LAN/WAN

SD-WAN

VoIP/CUCM

Network security

Documentation

Education

Bachelor's degree in IT/CS/Networking

Tools

Cisco routers/switches/firewalls

CUCM

Job description

Our Client is seeking an experienced Senior Network Engineer to join our IT organization and play a key role in designing, implementing, maintaining, and optimizing enterprise network infrastructure. This position will support a complex, geographically distributed environment and will be responsible for ensuring the reliability, security, performance, and availability of network services across the organization.

The ideal candidate is a hands-on network professional with strong Cisco networking experience and a background supporting enterprise LAN/WAN environments, network security, wireless infrastructure, SD-WAN, and voice technologies.

This role we're looking for someone with OT (Operational Technology) experience. As it relates to Network Engineering in regards to network our manufacturing machinery runs on.

Responsibilities

• Design, configure, implement, and maintain enterprise network infrastructure across multiple locations.
• Manage and troubleshoot Cisco routers, switches, firewalls, and wireless technologies.
• Support and optimize enterprise LAN/WAN and SD-WAN environments.
• Monitor network performance, availability, and capacity and proactively identify potential issues.
• Troubleshoot complex network connectivity, routing, switching, wireless, and security issues.
• Configure and maintain network security technologies and implement industry best practices.
• Support TCP/IP, DNS, DHCP, VLANs, VPNs, routing protocols, and other core networking technologies.
• Support enterprise voice technologies, including VoIP and Cisco CUCM.
• Implement and maintain network authentication and access-control technologies such as 802.1X.
• Perform network hardware, firmware, and software upgrades while minimizing business disruption.
• Participate in network architecture, infrastructure upgrades, and technology implementations.
• Maintain accurate network documentation, diagrams, configurations, and equipment inventories.
• Collaborate with infrastructure, security, application, and other IT teams to resolve technical issues and deliver technology initiatives.
• Coordinate with third-party vendors, telecommunications providers, and service partners.
• Participate in network-related projects, disaster recovery initiatives, and business continuity planning.
• Provide technical guidance and mentorship to other members of the network and IT teams.

Requirements

• 5+ years of experience in network engineering or a related infrastructure role.
• Must have Experience with OT (Operational Technology)
• Strong experience with Cisco networking technologies, including routers, switches, and firewalls.
• Strong understanding of LAN/WAN architecture and enterprise networking.
• Experience with SD-WAN technologies.
• Strong understanding of TCP/IP and OSI networking models.
• Experience with network security, wireless networking, VPNs, VLANs, routing, and switching.
• Experience supporting geographically distributed or multi-site environments.
• Strong analytical, troubleshooting, and problem-solving skills.
• Excellent communication and documentation skills.
• Ability to work independently while collaborating effectively with cross-functional IT teams.

Preferred Qualifications

• CCNA, CCNP, or other relevant networking certification.
• Experience with Cisco CUCM / VoIP.
• Experience implementing 802.1X / network access control.
• Experience with network monitoring and management platforms.
• Experience supporting manufacturing, distribution, warehouse, or other highly distributed environments.
• Bachelor's degree in Information Technology, Computer Science, Networking, or a related field.