Lead Sr. NOC Engineer

Senior-Level NOC Engineer (Tier
3)

The Senior-Level NOC Engineer (Tier
3) functions as the highest technical escalation point within the global Network Operations Center. This role provides advanced troubleshooting, architecture-level insight, and deep subject matter expertise across complex, multi-vendor network infrastructures. Tier 3 support engineers lead root-cause analysis, oversee major incidents, influence network design standards, and partner with engineering teams to drive stability, scalability, and operational excellence.

• Advanced Incident & Problem Management
• Acts as the final escalation point for all high-severity incidents, providing advanced packet analysis, protocol decoding, and cross-platform correlation.
• Performs deep-dive RCA, producing engineering-quality post-incident documentation and recommending long-term corrective actions.
• Leads network recovery efforts during outages involving routing instability, security events, hardware failures, or cloud connectivity issues.
• Architecture-Level Network Troubleshooting Expertise
• Expert proficiency with Cisco NAC Solutions/Cisco Campus Networking, and Aruba Wireless services with the ability to interpret and troubleshoot complex multi-tier architectures.
• Strong knowledge of Campus Networking automation, API-driven provisioning, and lifecycle management in large-scale environments, including experience with IAC pipelines.
• Governs enterprise campus network architectures, including wired access, wireless LAN (WLAN), and edge connectivity designs.
• Enforces standards for secure user and device onboarding, guest access, BYOD, IoT connectivity, and Captive Portal authentication, across campus environments.
• Proactively validates and enforces security architectures and best practices.
• Defines and governs Zero Trust access architectures using Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA), enabling secure user‐to‐application connectivity without traditional network‐based trust models.
• Identifies opportunities for platform monitoring, observability, and alerting.
• Tools, Automation & Visibility
• Mastery of packet analysis tools:
  Bluecat, Solarwinds, APCON, Wireshark, netflow/sflow platforms.
• Develops automation scripts for configuration validation, monitoring, and incident response workflows.
• Evaluates and integrates new operational tools and observability platforms.
• Cross-Functional Leadership
• Partners with Network Engineering to validate new designs, perform pre-deployment testing, and influence standards.
• Mentors junior and mid-level NOC engineers, providing technical coaching, lab guidance, and training material.
• Engages directly with vendors for escalated TAC cases, hardware escalations, and architectural reviews.

• Bachelor's degree in Computer Science, Engineering, Information Systems or equivalent experience.
• 8+ years of enterprise network operations or engineering experience supporting large-scale environments.
• Expert-level knowledge of Cisco Campus Architecture & NAC.
• Extensive experience with Cisco, Juniper, Brocade, Palo Alto, Aruba, and F5 ecosystems.
• Ability to lead major incidents under pressure with clear communication and technical command.

• Cisco CCNP (or equivalent)

• CCIE (Routing & Switching, Enterprise, or Data Center)
• JNCIP/JNCIE
• PCNSE (Palo Alto)
• F5 Certified Administrator or Engineer
• AWS Advanced Networking

• Must participate in 24x7 Tier 3 escalation rotation.
• May assist in after-hours change execution and major event coverage.