The Role Senior Network Security SME and design authority responsible for network segmentation and Zero Trust initiatives across on-prem and hybrid cloud environments. This role owns architecture decisions, enforcement strategy, and senior customer engagement for a large enterprise environment. Your responsibilities: (Up to 10, Avoid repetition) Act as Network Security Design Authority for segmentation and Zero Trust. Design, implement, and optimize network segmentation using Guardicore and Illumio. Own User-to-Server (U2S) and Server-to-Server (S2S) traffic controls. Lead Guardicore → Illumio transition and future-state architecture. Drive segmentation standards, governance, and operational handover. Serve as primary technical interface to senior customer stakeholders. Manage escalations related to enforcement, legacy dependencies, and risk trade-offs. Act as a Subject Matter Expert (SME) in analyzing and visualizing "application" traffic to understand application flows and dependencies Overseeing the design, implementation, and optimization Network segmentation Developing Knowledge of Operations (KOP) and Standard Operating Procedures (SOPs) Your Profile Essential skills/knowledge/experience: 15 years in Network Security with architect / design authority responsibility. Strong, hands-on expertise in network segmentation / microsegmentation. Proven experience with Guardicore and Illumio. Deep understanding of on-prem data center network security. Working knowledge of hybrid cloud network security, including: VPC / VNet design Security Groups / NSGs Hybrid connectivity (VPN, ExpressRoute, Direct Connect) Experience working directly with senior customer stakeholders. Desirable skills/knowledge/experience: (As applicable) Zero Trust architecture exposure. Regulated enterprise environment experience. Platform migration experience