Senior Network Engineer

The Senior Network Engineer designs, implements, operates, and provides Level 3 support for enterprise data center and campus networks, with a focus on Cisco ACI, Cisco DNA Center (Catalyst Center) / SD-Access, enterprise wireless, and Cisco ISE, and acts as the subject-matter expert for these technologies.

• ACI: Operate and support the Cisco ACI fabric (APIC, Spine, Leaf), including tenants, VRFs, BDs, EPGs, contracts, L3
  
  Out/vPC, upgrades, and fault troubleshooting.
• DNAC & SD-Access: Administer Cisco DNA Center (Catalyst Center) and SD-Access fabric (Edge, Border, Control Plane) using automation, templates, SWIM, and Assurance
• Wireless: Manage Catalyst 9800 WLCs and APs, SSIDs, RF, and fabric-enabled wireless; troubleshoot client connectivity and roaming.
• NAC: Administer Cisco ISE for 802.1X, MAB, guest, BYOD, profiling, posture, and Trust Sec SGT segmentation
• Automation & Assurance: Automate provisioning and compliance checks using Python/Ansible and APIC/Catalyst Center REST APIs; monitor fabric and client health proactively.
• Incident & Change: Provide L3 support and lead incident, problem, and change management with RCA within SLAs; participate in the 24/7 on‑call rotation and respond out of hours as required
• Documentation & DR: Maintain SOPs, runbooks, topology diagrams, and inventory; plan and test DR/BCP.
• Coordination: Drive vendor TAC cases, support migrations and upgrades, and work with NOC/SOC, server, and application teams; visit client and remote sites as required.
• Standards:
  Apply ITIL and information security best practices across all network and security operations

• Bachelor’s degree in a relevant discipline with 8–10 years of enterprise networking experience.
• Proven hands‑on experience with Cisco ACI, DNAC/SD-Access, wireless, and Cisco ISE (NAC), including design, deployment, and day‑2 operations at enterprise scale
  .
• CCNP Data Center or CCNP Enterprise essential; CCNP Security (ISE), CCNP Wireless and CCIE preferred (see page
  2).
• ITIL knowledge and experience in a NOC supporting large enterprise or multi‑national client
• Excellent written and verbal communication skills.
• Willing to work 24/7 on‑call shifts when needed and to travel to client and remote sites

• ACI: Multi‑Pod/Multi‑Site, P , L2
  
  Out/L3
  
  Out, VMware NSX integration, firmware upgrades.
• DNAC & SD-Access: fabric provisioning, LAN automation, Assurance, SWIM, IPv
  6.
• Wireless: Catalyst 9800/AireOS, Wi‑Fi 6/6E, RF design and site surveys, WPA3‑Enterprise.
• NAC (Cisco ISE): 802.1X, MAB, RADIUS/TACACS+, profiling, posture, Trust Sec, pxGrid.
• Automation: Python, Ansible, Terraform (ACI provider), REST APIs, Catalyst Center templates and Assurance.
• Routing & Switching: OSPF, EIGRP, BGP, VXLAN, Nexus, Catalyst, ISR/ASR.

• Minimum: at least one of CCNP Data Center or CCNP Enterprise (
  * Essential – one of the two is sufficient). Holding both is highly desirable.
• Specialist certifications: each CCNP concentration exam passed earns a Cisco Certified Specialist credential (e.g.,
  Specialist – Data Center ACI Implementation
  , Specialist – Security Identity Management Implementation
  ). These are accepted as evidence of expertise in the individual technology.
• Wireless: Cisco moved the wireless exams out of CCNP Enterprise into the new CCNP Wireless track in March 2026; recent ENWLSI/ENWLSD passes still count within their validity period
• Process: ITIL 4 Foundation or equivalent service‑management certification.