fault rectification of incidents, supporting Problem Management, Continual Service Improvement (CSI), and occasional Change Request (CR) work on IT Systems supporting key National Security outputs. 3rd Line Network Engineers conduct reactive and proactive maintenance on High Side systems and may occasionally support lower classification systems. They respond … demonstrable understanding of Cisco Enterprise LAN environments at 3rd line support level, ideally CCNP and CCDP level. Focus on Secure LAN environments, including security boundaries and rulesets. Good understanding of WAN connectivity and routing protocols, and experience managing virtual and physical networking solutions. Hands‐on experience troubleshooting Layer ...