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Nexus · 1 day ago

Sr. Network Engineer (CONTRACT)

Alameda, CA

Contract

Hybrid

Senior Level

7+ years exp

Nexus Technologies LLC is seeking a Senior Network Engineer to support a strategic enterprise network modernization initiative for a key customer. This role requires deep hands-on expertise across various networking platforms, including Cisco SDA, ISE, and Palo Alto security, focusing on architecture validation and infrastructure improvements.

RailroadTransportationWarehousing

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

Qualification

Cisco SDACisco ISEPalo AltoBGP/OSPFNetwork automationAzure routingWireless engineeringAnsibleGitTerraformTelemetrySIEM integrations

Required

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