Job Summary: The Network Administrator is responsible for maintaining and supporting enterprise network infrastructure across large, distributed environments. This includes Cisco routers, switches, wireless LAN controllers, and access points. The role ensures reliable connectivity, optimal performance, and secure operations for thousands of users and devices. Job Duties:
- Configure, maintain, and support routers, switches, firewalls, wireless controllers, and related network infrastructure.
- Manage LAN, WAN, VPN, and SD-WAN environments to ensure stable and optimized connectivity.
- Perform regular reviews of network performance, capacity, and utilization using monitoring tools.
- Maintain IP address management, VLAN configurations, routing policies, and subnet documentation.
- Monitor network devices and links for performance issues, outages, or security anomalies.
- Respond to alerts and incidents from monitoring systems or end users.
- Troubleshoot connectivity issues across wired, wireless, and remote access networks.
- Conduct root-cause analysis and implement corrective actions to reduce recurring incidents.
- Configure and manage firewall policies, ACLs, VPN access, and secure remote connectivity.
- Apply security hardening, patches, and firmware updates to network devices.
- Support vulnerability remediation across firewalls, routers, and switches.
- Manage enterprise wireless infrastructure, including controllers, access points, and RF optimization.
- Support wireless onboarding, identity-based access, and security protocols.
- Perform firmware and OS upgrades for routers, switches, and firewalls.
- Assist with network hardware refresh cycles and lifecycle replacements.
- Maintain accurate network diagrams, runbooks, SOPs, and configuration documentation.
- Support high-availability architectures, including HA pairs, LACP, routing failover, and dual-path circuits.
- Participate in DR planning and network recovery testing.
- Ensure backups of network device configurations are current and retrievable.
- Collaborate with Server, Storage, Cloud, Security, and Application teams on cross-tower issues.
- Provide network expertise for new applications, systems, and cloud integrations.
- Coordinate with vendors and ISPs to resolve WAN and circuit issues.
- Record all incidents, maintenance activities, and change requests in ITSM tools.
- Provide mentoring and knowledge transfer to junior network staff.
Key Responsibilities: - Network Operations - Monitor, maintain, and troubleshoot enterprise LAN/WAN networks across multiple sites.
- Cisco Router & Switch Management - Configure routing protocols (OSPF, EIGRP, BGP), VLANs, STP, EtherChannel, ACLs, QoS, and trunking.
- Wireless Infrastructure Support - Manage Cisco Wireless LAN Controllers (WLC), AP provisioning, RF optimization, and wireless security.
- Network Monitoring - Use tools like SolarWinds, Cisco Prime, or DNAC to track performance, uptime, and alerts.
- Incident & Problem Resolution - Diagnose connectivity issues, packet loss, latency, and hardware failures.
- Security & Compliance - Apply security policies, manage firewalls, enforce NAC, and support network segmentation.
- Change Management - Execute planned changes, upgrades, and maintenance windows following ITIL processes.
- Documentation - Maintain network diagrams, inventory, configurations, and SOPs.
Collaboration - Work with server, cloud, security, and application teams to support business Required Qualifications: - 3-7 years of experience supporting large enterprise networks.
- Hands-on experience with multi-site Cisco environments.
- Experience supporting high-density wireless deployments is a plus.
- Cisco Networking Expertise - Strong hands-on experience with Cisco routers, switches, WLCs, and APs.
- Solid understanding of TCP/IP, DNS, DHCP, NAT, routing protocols, and switching fundamentals.
- Experience with Cisco IOS/IOS-XE configuration and troubleshooting.
- Knowledge of wireless technologies (802.11 standards, RF fundamentals, WLAN security).
- Familiarity with network monitoring tools (SolarWinds, Cisco Prime, DNAC).
- Ability to analyze packet captures using Wireshark.
- Strong troubleshooting and analytical skills.
Preferred Qualifications & Skills: - Cisco CCNA (required or strongly preferred)
- Cisco CCNP Enterprise
- CompTIA Network+
- ITIL Foundation
Compensation: We provide a competitive pay and benefits package. This position is offering a salary range of $95,000-$105,000 Belcan considers several factors when extending an offer, including but not limited to education, experience, geographic location, and discipline. Benefits offered may include health care, dental, vision, life insurance; 401(k); education assistance; paid time off including PTO, holidays, and any other paid leave required by law.
www.belcan.com
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