Network LAN Engineer-4

Realign Llc; Liberty (NC); On-site; USD 90,000 - 120,000; Full time

Job summary

Realign Llc is seeking an experienced Network LAN Engineer in Liberty, NC to design, implement, and maintain enterprise LAN infrastructure. The role requires hands-on Cisco networking expertise and strong problem-solving skills to resolve complex production issues.

You will design, configure, and troubleshoot LAN/WAN, VLANs, and routing while collaborating with security, systems, and applications teams to ensure reliability and scalability.

Qualifications

• Requires hands-on experience with enterprise LAN/WAN networks.
• Proficient with Cisco switches/routers and Catalyst devices.
• Strong troubleshooting and root-cause analysis abilities.
• Experience with network monitoring and incident response.
• Familiarity with change management and disaster recovery.

Responsibilities

• Design, implement, and maintain LAN/WAN infrastructure.
• Configure Cisco switches and routers.
• Manage VLANs, STP, EtherChannel, and inter-VLAN routing.
• Troubleshoot TCP/IP, DHCP, DNS, ARP, and ICMP issues.
• Monitor network performance and resolve incidents.
• Support upgrades, migrations, and expansion.
• Maintain network diagrams, configs, and SOPs.
• Collaborate with infra, security, systems, and app teams.
• Contribute to network automation and change management.

Skills

LAN/WAN networking

Cisco networking

Cisco Catalyst switches

VLAN/STP/RSTP/MSTP

TCP/IP/OSI

OSPF/BGP routing

DHCP/DNS/IP subnetting

Network troubleshooting

Network monitoring tools

Network security/Firewalls/VPN

Documentation & change management

Job description

Liberty, North Carolina 27298 Posted October 9th, 2026

We are seeking an experienced Network LAN Engineer to design, implement, maintain, and troubleshoot enterprise LAN infrastructure. The ideal candidate will have strong hands-on experience with switching, routing, network protocols, and network security, along with the ability to troubleshoot complex network issues in a production environment.

Key Responsibilities

• Design, configure, implement, and maintain LAN/WAN network infrastructure.
• Configure and troubleshoot Cisco switches and routers.
• Manage VLANs, STP, EtherChannel, trunking, and inter-VLAN routing.
• Work with TCP/IP, DHCP, DNS, ARP, and ICMP protocols.
• Troubleshoot network connectivity, performance, and availability issues.
• Implement and maintain Layer 2 and Layer 3 networking solutions.
• Support network upgrades, migrations, and infrastructure expansion.
• Monitor network performance and identify potential issues proactively.
• Work with firewalls, VPNs, NAC, and network security controls.
• Perform network configuration, incident resolution, and root cause analysis.
• Maintain network documentation, diagrams, configurations, and operational procedures.
• Collaborate with infrastructure, security, systems, and application teams.
• Participate in network maintenance, change management, and disaster recovery activities.
• Support enterprise network automation and configuration management where applicable.

Must-Have Skills

• Strong experience with LAN/WAN networking.
• Hands-on experience with Cisco networking technologies.
• Strong knowledge of Cisco Catalyst switches.
• Experience with VLAN, STP, RSTP, MSTP, EtherChannel, and trunking.
• Strong understanding of TCP/IP and OSI models.
• Experience with routing protocols such as OSPF and BGP.
• Knowledge of DHCP, DNS, ARP, and IP addressing/subnetting.
• Strong network troubleshooting and root cause analysis skills.
• Experience with network monitoring and troubleshooting tools.
• Knowledge of network security, firewalls, VPN, and NAC.
• Experience with network documentation and change management.

Good to Have

• Experience with Cisco DNA Center / SD-Access.
• Knowledge of SD-WAN.
• Experience with Python or Ansible for network automation.
• Knowledge of cloud networking - AWS/Azure/GCP.
• Experience with wireless LAN (WLAN) technologies.
• Familiarity with ITIL and enterprise network operations.