Network and Cloud Security - SME

We are seeking an expert Subject Matter Expert (SME) to serve as the ultimate technical authority within our Network Security Operations team. This is a pure security engineering, and partial leadership role cantered around four critical pillars: Palo Alto Environments, Zscaler Platform, Web Application Firewalls (WAF), and Public Cloud Security.

As an SME, you will own the entire lifecycle of these platforms leading complex project planning, architectural design, high-risk implementations, and acting as the final escalation tier for operational crises. While a foundational understanding of routing and switching is required to integrate tools, your daily focus is entirely dedicated to safeguarding our perimeter, secure cloud edge, cloud infrastructure, and application layers.

Key Responsibilities:

Architectural Planning, Design & Project Implementation

• High-Level Strategy: Plan and design security topologies across Palo Alto NGFW, Prisma Access, Zscaler (ZIA/ZPA), F5 WAF, and public clouds (AWS/Azure).
• Complex Migrations & Deployments: Lead high-risk greenfield deployments, technical migrations (e.g., legacy VPN to Zscaler/Prisma SASE), and security zone expansions.
• Engineering Documentation: Author and approve high-level designs (HLD), low-level designs (LLD), migration manifests, and fallback procedures.

Security Operations & Escalation (Tier 3+)

• SME Escalation Anchor: Act as the highest technical escalation tier for catastrophic outages, complex traffic drops, and intricate security tool failures.
• Advanced Policy Engineering: Architect and continuously audit global firewall rule bases, WAF signatures, and Zscaler security policies to eliminate false positives and security gaps.
• Threat & Vulnerability Mitigation: Investigate complex application-layer violations, advanced persistent threats, and network perimeter vulnerabilities.

Process, Workflows & Governance

• ITIL Change & Advisory: Serve as a technical validator in corporate Change Management processes, ensuring high-impact policy shifts are risk-assessed and vetted.
• Knowledge & Shift Enablement: Build comprehensive Standard Operating Procedures (SOPs) and technical knowledge bases to seamlessly delegate daily tasks to shift operations teams.
• Lifecycle Management: Monitor vendor roadmaps, product updates, hotfixes, and zero-day advisories to plan global lifecycle upgrades.