L3 Network Administrator

2 days ago

Jacksonville, FL, United States TCS USAAvance Consulting Full time

Job Description

  • Advanced knowledge of network protocols, devices (routers, switches, firewalls, load balancers, telephony systems) Experience with network monitoring and diagnostic tools 

  • Strong troubleshooting and analytical skills 

  • Experience in vendor management and multi-vendor environments 

  • Proven ability to lead transition and knowledge transfer activities 

  • Excellent communication and interpersonal skills

Roles & Responsibilities:

The Network Level 3 Administrator provides advanced support for data and voice network infrastructure (WAN, LAN, Wi-Fi, VPN, firewalls, load balancers, telephony, etc.) across corporate, data center, and retail locations. This role is responsible for incident resolution, proactive monitoring, configuration management, and vendor coordination. The administrator will also lead transition activities, including knowledge transfer and documentation, and must demonstrate strong communication skills.

Incident & Problem Management: 

  • Resolve complex network outages and performance issues

  • Perform root cause analysis and implement permanent fixes

  • Classify, prioritize, and track incidents to closure

Network Operations: 

  • Monitor and manage network devices using tools (SolarWinds, Riverbed, FortiManager)

  • Perform health checks, capacity management, and configuration updates

  • Implement approved changes and service requests

Vendor Coordination: 

  • Open and follow up on tickets with OEMs, Telco, ISPs, and third parties

  • Coordinate with external vendors for incident resolution and hardware support

Documentation & Reporting: 

  • Develop and maintain SOPs, KB articles, and network documentation

  • Provide regular network reporting and audit artifacts

Transition & Knowledge Transfer: 

  • Lead transition planning, knowledge acquisition, and playback sessions

  • Prepare and update Documents of Understanding (DOU), SOPs, and escalation processes

  • Conduct knowledge transfer sessions and ensure operational readiness

Continuous Improvement: 

  • Identify incident trends, recommend capacity changes, and participate in CAB meetings

  • Update documentation and processes based on lessons learned

Communication: 

  • Communicate incident status and major updates to stakeholders

  • Collaborate effectively with internal teams, vendors, and customer representatives

  • Demonstrate clear, professional written and verbal communication

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