Network Engineer III

Job Summary

The Network Engineer III is responsible for evaluating, supporting, implementing and monitoring Network Management Toolsets, implementing complex multi‑site network solutions, leading projects, and serving as an escalation point for the team.

• Design and implement data center switching/routing architectures (Cisco and Arista) including spine‑leaf fabrics, MLAG/VXLAN, and inter‑DC interconnects.
• Own physical capacity planning for owned and co‑located data centers: rack/power/cooling capacity forecasting, cabinet and cross‑connect layout standards, and structured cabling design.
• Manage relationships and SLAs with co‑location providers and circuit/carrier vendors, including contract renewals, remote‑hands escalations, and facility maintenance coordination.
• Lead data center build‑outs, expansions, and equipment refresh/lifecycle projects, coordinating electrical, mechanical, and physical security requirements with facilities and co‑location partners.
• Own the Aruba SD‑WAN architecture across the branch portfolio: policy design, QoS, path conditioning, and Orchestrator administration.
• Lead cloud connectivity initiatives (Direct Connect/Express Route, transit gateways/virtual WANs, cloud routing strategy) in coordination with cloud infrastructure and security teams.
• Serve as the primary network point of contact for cross‑functional projects with the Security team, translating network architecture and traffic requirements into clear inputs for firewall, segmentation, and zero‑trust initiatives without performing the security configuration itself.
• Lead root‑cause analysis for major or recurring network incidents and complex multi‑domain outages (LAN/WAN/DC/cloud).
• Develop network standards, reference architectures, and lifecycle/capacity plans for switching, routing, and SD‑WAN platforms.
• Lead and review changes for high‑risk or complex maintenance windows; act as escalation point for LevelI/II engineers.
• Evaluate new technologies and vendor features (Cisco, Arista, Aruba) and provide recommendations to engineering leadership.
• Perform any other job‑related duties as requested.

• Associate’s degree required; equivalent years of relevant work experience may be accepted.
• Seven (7) years of network experience required.

• Advanced computer and networking skills.
• Proficient in Microsoft Office Suite (Word, Excel, PowerPoint).
• Excellent written and verbal communication skills.
• Effective listening and critical thinking skills.
• Strong interpersonal skills and high level of professionalism.
• Effective problem‑solving skills with attention to detail.
• Ability to work independently and within a team environment.
• Training/teaching skills.
• Technical writing skills.
• Time‑management skills.
• Leadership experience and skills.
• Ability to develop, prioritize and accomplish goals.
• Expert‑level Cisco IOS and Arista EOS skills: advanced routing (OSPF, BGP), spine‑leaf/VXLAN‑EVPN fabrics, MLAG/vPC.
• Deep Aruba SD‑WAN expertise:
  Orchestrator policy design, application‑aware routing, multi‑circuit failover, and SD‑WAN‑to‑data‑center integration.
• Strong understanding of cloud network architecture (AWS/Azure/GCP constructs, transit gateways, hybrid routing, BGP over Direct Connect/Express Route).
• Strong working knowledge of firewall and security architecture concepts (zones, micro‑segmentation, NGFW policy logic, IDS/IPS placement) sufficient to design networks that meet security requirements and partner effectively with the Security team.
• Proficient with network automation/scripting (e.g., Python, Ansible) for configuration and validation tasks.
• Strong understanding of data center physical infrastructure design: power redundancy (N+1/2N), cooling architecture, structured cabling standards (e.g., TIA‑942), and DCIM tooling.
• Working knowledge of physical and environmental security controls in data center/co‑location facilities (badge access, cameras, environmental sensors) sufficient to coordinate with facilities/security teams and co‑location providers.
• Strong incident command and root‑cause analysis skills across complex, multi‑vendor environments.

• Aris…