On-Site Enterprise Network Engineer | Firewall & VPN Expert

Select Source Solutions; Seattle (WA); On-site; USD 78,000 - 86,000; Full time

Job summary

Select Source Solutions in Seattle is seeking a Network Infrastructure Engineer to operate, secure, and optimize an enterprise network in an on-site environment. You will manage LAN, VPN, DNS/DHCP/IPAM, and authentication services, ensuring reliability, security, and documentation.

The role requires hands-on experience with Cisco, Fortinet FortiGate, Infoblox, RADIUS/LDAP/AD, and enterprise monitoring tools. Strong networking fundamentals and the ability to work with onsite staff are essential.

Qualifications

• Bachelor's degree or equivalent combination of education and experience.
• Hands-on experience supporting enterprise network infrastructure.
• Experience configuring Cisco switches in enterprise LANs.
• Experience with Fortinet FortiGate firewalls and security configurations.
• Experience with Infoblox DNS/DHCP/IPAM.
• Knowledge of RADIUS, LDAP, Active Directory, VPN technologies, and network authentication.
• Strong TCP/IP, DNS, DHCP, subnetting, VLANs, routing, and troubleshooting skills.
• Experience with enterprise network monitoring tools.
• Ability to maintain accurate network documentation and diagrams.
• Ability to work on-site in a customer environment.

Responsibilities

• Configure, administer, and troubleshoot enterprise network infrastructure.
• Support LAN connectivity, switching, routing, VLANs, and network services.
• Maintain Cisco switches, VLANs, and performance troubleshooting.
• Support Juniper/Aruba switching technologies as needed.
• Administer Fortinet FortiGate firewalls and policies.
• Manage Infoblox DNS/DHCP/IPAM services.
• Support RADIUS, LDAP, and AD authentication.
• Assist with VPN connectivity and secure remote access.
• Maintain network diagrams, IP records, and inventories.
• Coordinate with onsite staff and customer personnel during maintenance.

Skills

Enterprise networking

Cisco switches

Fortinet FortiGate

Infoblox DNS/DHCP/IPAM

RADIUS/LDAP/AD

VPN technologies

TCP/IP networking

Network monitoring

Documentation

On-site work

Education

Bachelor's degree in Computer Science/IT/Networking or related field

Tools

Fortinet FortiGate

Infoblox

Cisco switches

LDAP/AD

Job description

Select Source Solutions in Seattle is seeking a Network Infrastructure Engineer to operate, secure, and optimize an enterprise network in an on-site environment. You will manage LAN, VPN, DNS/DHCP/IPAM, and authentication services, ensuring reliability, security, and documentation.

The role requires hands-on experience with Cisco, Fortinet FortiGate, Infoblox, RADIUS/LDAP/AD, and enterprise monitoring tools. Strong networking fundamentals and the ability to work with onsite staff are essential.