Sr. Network Engineer (CONTRACT)

Nexus Technologies LLC•Alameda, CA

1d•Hybrid

About The Position

Senior Network Engineer to support a strategic enterprise network modernization initiative for a key customer operating a distributed, 24x7 environment. This role requires deep hands-on expertise across Cisco SDA, Catalyst switching, Cisco ISE, wireless, and Palo Alto security platforms. You will be responsible for architecture validation, remediation of technical debt, and execution of infrastructure improvements across campus and WAN environments.

Requirements

7+ years enterprise networking experience
Strong Cisco implementation background (Catalyst/Nexus)
Hands-on Cisco SDA experience in production environments
Cisco ISE deployment (not just administration)
Palo Alto firewall deployment, HA, and IPsec VPNs
Wireless engineering experience (Cisco 9800 + 91xx APs)
Proficiency with BGP/OSPF and routing policy

Nice To Haves

DNA Center workflows and automation
Azure routing + NVA experience
Experience in manufacturing or multi-building campus networks

Responsibilities

Lead configuration, troubleshooting, and optimization across Cisco switching, routing, and fabric-based networking
Own Cisco SDA implementation components: Border/edge and fabric architecture VXLAN/EVPN workflows SGT strategy and deployment DNA Center automation and assurance
Drive Cisco ISE maturity: Upgrade to current supported code Implement wired and wireless 802.1X Device profiling and posture enforcement Integrate with Microsoft identity services
Improve wireless and access layer resiliency: Evaluate and fix single points of failure Optimize WLC config and RF planning Enhance redundant uplinks and coverage
Participate in WAN and edge modernization: BGP/OSPF cleanup and design Palo Alto HA configuration and failover Evaluate SD-WAN / SASE options
Troubleshoot advanced L2–L7 issues in production
Document changes and provide knowledge transfer to ops teams
Network automation and Infrastructure as Code, including the use of modern automation frameworks to improve consistency, scalability, and operational efficiency.
Hands‑on experience with Ansible, APIs, Git, and Terraform for configuration management, automation, and cloud/network infrastructure provisioning.
Observability and assurance at scale, with the ability to proactively monitor, analyze, and troubleshoot enterprise networks.
Experience enabling and consuming telemetry, NetFlow, and IPFIX for traffic visibility and performance analysis.
Familiarity with Cisco DNA Center Assurance, Palo Alto Panorama, and SIEM integrations to provide centralized visibility, security monitoring, and operational insights.