Senior Network Engineer (On-Site) – Cisco & SD-WAN Expert

Gravity IT Resources

Charlotte (NC)

On-site

USD 83,000 - 131,000

Part time

5 days ago

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Job summary

Gravity IT Resources is seeking a Network Engineer III to support the implementation, modernization, and management of critical network infrastructure across multiple locations. You will configure, test, troubleshoot, and document Cisco-based solutions while working in an Agile team to ensure reliable, secure network operations for substations, corporate offices, and other essential sites.

The role emphasizes hands-on configuration of Cisco routers/switches, SD-WAN deployment, WAN modernization,

Qualifications

High school diploma or GED.
5 years hands-on enterprise experience.
Experience with configuring, implementing, or supporting Cisco routers and switches.
Solid understanding of IPv4, subnetting, TCP/IP, VLANs, IEEE 802.1Q trunks, Spanning Tree Protocol, and link aggregation.
Working knowledge of OSPF, BGP, enterprise WAN concepts, and route selection.
Ability to troubleshoot Layer 2 and Layer 3 connectivity issues using a structured approach.
General understanding of wireless, firewall, access control, and network segmentation technologies.
Working knowledge of copper and fiber cabling standards and connector types.
Ability to create and maintain accurate technical documentation and network diagrams.
Strong attention to detail and ability to follow engineering, cybersecurity, and change management processes.
Effective written, verbal, interpersonal, and teamwork skills.

Responsibilities

Configure, implement, test, and support Cisco routers, switches, wireless access points, and related infrastructure using established standards.
Deploy and support Cisco Catalyst SD-WAN solutions, including WAN edge routers, transport connectivity, segmentation, centralized policies, and application-aware routing.
Support WAN modernization efforts across SD-WAN, MPLS, private Ethernet, internet, cellular, and other WAN services.
Troubleshoot routing, switching, SD-WAN, wireless, WAN connectivity, firewall policies, and Layer 2/Layer 3 communication issues.
Implement and validate network resiliency, segmentation, failover, quality of service, and high-availability features.
Prepare engineering job packages with equipment lists, installation instructions, implementation and test plans, rollback procedures, and supporting documentation.
Create and maintain physical and logical network diagrams, rack elevations, wiring diagrams, layouts, and power drawings using Microsoft Visio.
Ensure monitoring, alarming, logging, asset records, and operational documentation are complete before solutions go into service.
Coordinate, activate, test, and troubleshoot private and public WAN circuits.Monitor implementation work for compliance with engineering standards, cybersecurity, regulations, and procedures.
Support network automation using Python, Ansible, REST APIs, Git, or similar scripting tools.
Collaborate with engineering, operations, cybersecurity, vendors, and business partners.
Follow formal change management procedures, including impact analysis, peer review, approvals, validation, rollback planning, and documentation.
Participate in planned implementations, maintenance, and troubleshooting outside normal hours as needed.
Work within an Agile environment on team-based projects and assignments.