Senior Network Administrator: Secure Multi-Site WAN/LAN

SEMRHI; Hattiesburg (MS); On-site; USD 65,000 - 90,000; Full time

Job summary

SEMRHI is seeking a Network Administrator to design, implement, and manage a secure multi-site network across locations in Mississippi. You will ensure reliable WAN/LAN connectivity, configure routers, switches, and firewalls, and support VPNs while enforcing HIPAA-aligned security practices.

The role requires 3–5 years in enterprise networks, experience with UniFi/Cisco/Meraki, and familiarity with PRTG or SolarWinds. On-call duties may be required.

Qualifications

• 3-5 years of network administration experience in a multi-site enterprise environment.
• Hands-on with managed switches, firewalls and enterprise wireless platforms.
• Proficiency with TCP/IP, BGP, OSPF, VLAN, STP and QoS.
• Experience with UniFi, Cisco, Meraki or similar platforms.
• Familiarity with network monitoring tools such as PRTG or SolarWinds.
• Knowledge of HIPAA security requirements related to network infra preferred.
• CompTIA Network+, CCNA; CCNP a plus; healthcare/multi-site experience preferred.
• On-call availability for critical network incidents.

Responsibilities

• Manage LAN, WAN, and wireless infrastructure across locations.
• Configure and troubleshoot routers, switches, firewalls, and APs.
• Administer VLANs, inter-VLAN routing, and guest network isolation.
• Monitor performance and respond to alerts using network tools.
• Manage DNS, DHCP, and IPAM; maintain VPN connections.
• Support SD-WAN and cloud networking; enforce firewall policies.
• Conduct cybersecurity training and HIPAA-compliant practices.
• Review network diagrams and document assets; coordinate with vendors.

Skills

LAN/WAN administration

Firewall & VPN management

Network monitoring

On-call availability

HIPAA security awareness

Education

CCNA or equivalent certification

CCNP a plus

CompTIA Network+

Tools

UniFi

Cisco

Meraki

PRTG/SolarWinds

Job description

SEMRHI is seeking a Network Administrator to design, implement, and manage a secure multi-site network across locations in Mississippi. You will ensure reliable WAN/LAN connectivity, configure routers, switches, and firewalls, and support VPNs while enforcing HIPAA-aligned security practices.

The role requires 3–5 years in enterprise networks, experience with UniFi/Cisco/Meraki, and familiarity with PRTG or SolarWinds. On-call duties may be required.