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# Network Engineer

- **Company:** Mercury Z
- **Location:** Nashville, TN, United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** IEEE 802.1Q, Border Gateway Protocol, Client Server Models, Catalyst (Software), Network Analysis, CompTIA Network+, Data Centers, Ethernet, Enhanced Interior Gateway Routing Protocol, IP Addressing, IPv4, IPv6, Routing, Open Shortest Path First (OSPF), TCP/IP, Wireshark, Wide Area Networks, Network Routers, Diagnostic Tools, Computer Network Operations, Juniper, Routing & Switching, Cisco
- **Published:** October 12, 2026
- **Apply:** https://www.careerjet.com/job/us6f0ee1cb57e649c876b9911752ef4999/eaa

## About the Role

* Cisco: CCNA (Routing & Switching) required; CCNP or CCIE highly preferred.
 * Alternative: Juniper JNCIA/JNCIS, or CompTIA Network+ (with significant field experience).

Core Competencies:

 * Hardware: Deep experience with Cisco ISR/ASR routers, Catalyst switches, Juniper MX/EX series, and Meraki MS/MX stacks.
 * Protocols: Proficiency in TCP/IP, IPv4/IPv6, BGP, OSPF, EIGRP, and SD-WAN architectures.
 * Network Analysis: Experience with packet-level analysis using Wireshark to identify latency or jitter issues.
 * Physical Layer: Familiarity with Fiber Optic standards (GPON/Active Ethernet) and the ability to use an OTDR or Fusion Splicer when necessary.

Soft Skills & Requirements

 * The Technical Consultant: Ability to walk into a Fortune 500 server room and speak as a peer to their Network Architects.
 * Critical Thinking: A methodical approach to the "broken" circuit-isolating variables from the handoff to the core.
 * Mobility: Must hold a valid driver's license and be comfortable with daily travel to client locations.
 * Physical Ability: Must be able to rack heavy enterprise equipment (up to 50 lbs) and work in professional data center environments.

## Description

We are looking for a Network Engineer with a strong background in routing and switching to lead our on-site enterprise deployments. This is not a standard "cable tech" role; we need a Cisco-certified professional who can bridge the gap between physical infrastructure and complex logical networking. You will be the technical authority on-site, responsible for configuring, troubleshooting, and maintaining high-capacity circuits for our most critical business clients., * Advanced L2/L3 Troubleshooting: Resolve complex connectivity issues involving BGP, OSPF, VLAN tagging (802.1Q), and STP.

 * Enterprise Deployment: Lead the installation and CLI-based configuration of Cisco, Juniper, and Meraki hardware.
 * Circuit Validation: Utilize high-end diagnostic tools (VIAVI, NetAlly) to ensure Fiber and Ethernet circuits meet strict Service Level Agreements (SLAs).
 * NOC Collaboration: Act as the primary field liaison for our Network Operations Center, assisting in the turn-up of static IP blocks and complex routing tables.
 * MDF/IDF Management: Perform "deep-dive" audits of client server rooms to optimize equipment placement and extend demarcations.
 * Infrastructure Reliability: While the focus is logical, you will ensure the physical layer (Fiber/Copper) is spliced and terminated to enterprise standards., * First-Visit Resolution: Utilizing your Cisco expertise to solve routing loops or configuration mismatches that a standard tech would miss.
 * Network Integrity: Ensuring that every client handoff is clean, documented, and performing at 100% capacity.
 * Client Confidence: Serving as a trusted advisor to client IT managers, ensuring they feel secure in our network's reliability.