Senior Network Administrator

The Senior Network Administrator is responsible for designing, implementing, and maintaining enterprise network infrastructure to ensure high availability, performance, and security. This role involves working with advanced networking technologies, leading troubleshooting efforts, supporting disaster recovery initiatives, and acting as an escalation point for complex issues. The ideal candidate will operate independently, manage vendor relationships, and contribute to continuous improvement of network operations and documentation.

KEY RESPONSIBILITIES

Plan, test, implement, monitor, and review network changes with minimal supervision

Lead troubleshooting efforts and resolve complex, escalated network issues

Serve as an escalation point for junior network administrators

Configure and maintain network infrastructure including routers, switches, firewalls, and VPNs

Ensure system availability and support 24x7 operations with on-call rotation

Monitor network performance using various tools and optimize as needed

Maintain accurate network documentation and system inventory

Manage vendor relationships and contribute to RFP development

Support disaster recovery planning and execution

Develop and maintain process and procedural documentation

REQUIRED QUALIFICATIONS

Bachelor’s degree in Computer Science or related field with 4+ years of experience OR 8+ years of equivalent experience

Hands‑on experience with Cisco Nexus, Catalyst, Meraki, and ASA

Experience with Palo Alto firewalls and Panorama

Strong knowledge of networking protocols (TCP/IP, UDP, SIP, RTP, EIGRP, OSPF, STP, bridging)

Experience with VPN gateways and network security concepts

Proficiency with network monitoring tools (e.g., SolarWinds, NetScout, Wireshark)

Experience with fiber testing tools (OTDR, power meters)

Experience with change management systems (e.g., ServiceNow)

Strong troubleshooting, analytical, and problem‑solving skills

Ability to work independently with minimal supervision

Strong communication and collaboration skills

PREFERRED QUALIFICATIONS

Familiarity with SONET, fiber optic systems, DACS, multiplexers, and T‑1 circuits

Experience with IDS/IPS systems

Knowledge of DHCP and DNS administration

Experience with network performance tools (e.g., Extrahop, Forescout)

Familiarity with remote access tools (e.g., SecureCRT, Putty)

CERTIFICATIONS

CCNP certification (required within 6 months of employment)

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