Senior Network Engineer: Cisco, Security & Cloud

Ethereum Technologies; Atlanta (GA); On-site; USD 120,000 - 180,000; Full time

Job summary

Ethereum Technologies is seeking a Senior Network Engineer to design, implement, and maintain our enterprise network infrastructure. The ideal candidate will bring strong Cisco routing/switching skills, firewall management (Palo Alto, Cisco ASA), and cloud networking knowledge to ensure secure, reliable connectivity across LAN/WAN/WLAN.

You will design and troubleshoot routing protocols, manage VPNs (IPsec/SSL), and participate in upgrades and migrations with security and cloud teams.

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 routing

Routing & Switching

BGP/OSPF/EIGRP

Firewalls

VPN IPsec/SSL

DNS/DHCP

Network monitoring

Python/Ansible

Zero Trust

Tools

SolarWinds

PRTG

Palo Alto

Cisco ASA

Job description

Ethereum Technologies is seeking a Senior Network Engineer to design, implement, and maintain our enterprise network infrastructure. The ideal candidate will bring strong Cisco routing/switching skills, firewall management (Palo Alto, Cisco ASA), and cloud networking knowledge to ensure secure, reliable connectivity across LAN/WAN/WLAN.

You will design and troubleshoot routing protocols, manage VPNs (IPsec/SSL), and participate in upgrades and migrations with security and cloud teams.