Network Engineer (CONTRACT)

NexusTek
Alameda, CA
Network Engineer (Routing, Wireless, 802.1X / NAC)

Engagement: Contract (6–12 months), extension likely

Location: Alameda, CA preferred — hybrid onsite

Start: ASAP

Contract Engagement Summary

Network Engineer to support network stabilization and implementation efforts as part of a broader modernization initiative. This contract engagement will assist with switch and wireless configuration, Cisco ISE rollout, microsegmentation, and Palo Alto edge support across multi-site enterprise environments.

Responsibilities

  • Implement and troubleshoot wired and wireless network changes
  • Configure Catalyst switches, VLANs, ACLs, and routing under direction of senior engineering
  • Support Cisco ISE deployment including:
    • 802.1X on wired and wireless ports
    • Certificate-based onboarding
    • Posture validation rollout
  • Assist with microsegmentation enforcement using SGTs
  • Validate wireless coverage, perform tuning, and improve redundancy
  • Support firewall change requests and VPN connectivity testing
  • Troubleshoot production issues related to:
    • L2/L3 connectivity
    • ISE authentication
    • DNS/DHCP/RADIUS interactions
  • Participate in change windows and document implementation work
  • 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.
Required Experience

Must Have

  • 3–7 years enterprise network engineering experience
  • Strong routing + switching fundamentals (Catalyst 9k)
  • Hands-on Cisco wireless (9800 WLC preferred)
  • Experience with 802.1X and NAC concepts
  • Familiarity with Cisco ISE configuration

Nice to Have

  • Exposure to Cisco SDA / DNAC
  • Basic Palo Alto firewall experience
  • Azure networking familiarity
  • Experience working across multiple buildings or sites

Technical Stack Contractor Should Know

  • Cisco Catalyst (L2/L3)
  • Cisco 9800 + 9120/9160 APs
  • Cisco ISE fundamentals
  • BGP/OSPF basics
  • Palo Alto firewall concepts
  • IPsec VPN
  • DHCP/DNS/RADIUS

Contractor Traits

  • Reliable hands-on executor
  • Comfortable operating in live networks with guardrails
  • Works well with senior engineer oversight
  • Curious, disciplined, detail-oriented
  • Calm under pressure in time-bound change windows

Posted 2026-01-21

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