Senior Network Engineer: Cisco, Security & Cloud Networking

Quantum Technologies. LLC; Atlanta (GA); On-site; USD 120,000 - 160,000; Full time

Job summary

Quantum Technologies LLC is seeking a Senior Network Engineer to design, implement, maintain, and troubleshoot enterprise network infrastructure. The role focuses on Cisco routing and switching, firewall configurations, and cloud networking across LAN/WAN/WLAN.

The ideal candidate will design and troubleshoot Cisco routers and switches, implement BGP/OSPF/EIGRP, manage Palo Alto and Cisco ASA firewalls, and support IPsec/SSL VPNs, with a strong emphasis on network security and automation.

Qualifications

• Hands-on experience with Cisco routers and switches.
• Expertise in routing and switching technologies.
• Strong knowledge of BGP, OSPF, EIGRP, and TCP/IP.
• Experience with Palo Alto and Cisco ASA firewalls.
• Knowledge of LAN, WAN, WLAN, and VLAN configurations.
• Experience with IPsec VPN and SSL VPN technologies.
• Understanding of DNS, DHCP, NAT, and subnetting.
• Experience with network monitoring tools such as SolarWinds and PRTG.
• Knowledge of network security and access control policies.
• Familiarity with Python or Ansible for network automation.

Responsibilities

• Design, configure, and maintain enterprise LAN, WAN, and WLAN infrastructure.
• Configure and troubleshoot Cisco routers, switches, and wireless controllers.
• Implement routing protocols such as BGP, OSPF, and EIGRP.
• Manage network security policies, firewall configurations, and access controls.
• Configure and maintain Palo Alto and Cisco ASA firewalls.
• Monitor network performance, availability, and connectivity.
• Troubleshoot complex network issues and minimize downtime.
• Implement VPN solutions, including IPsec and SSL VPN.
• Manage VLANs, subnetting, DNS, DHCP, and network segmentation.
• Support network infrastructure upgrades and migration projects.
• Maintain network documentation, diagrams, and configuration standards.
• Collaborate with security, infrastructure, and cloud engineering teams.

Skills

Cisco routers

Cisco switches

Routing & Switching

BGP

OSPF

EIGRP

TCP/IP

Palo Alto

Cisco ASA

DNS

DHCP

NAT

IPsec VPN

SSL VPN

SolarWinds

PRTG

Python

Ansible

Zero Trust

Wireshark

Tools

Wireshark

AWS

Azure

Job description

Quantum Technologies LLC is seeking a Senior Network Engineer to design, implement, maintain, and troubleshoot enterprise network infrastructure. The role focuses on Cisco routing and switching, firewall configurations, and cloud networking across LAN/WAN/WLAN.

The ideal candidate will design and troubleshoot Cisco routers and switches, implement BGP/OSPF/EIGRP, manage Palo Alto and Cisco ASA firewalls, and support IPsec/SSL VPNs, with a strong emphasis on network security and automation.