Network Security Manager

Roles and Responsibilities

Preferred Location : Chennai

• Administer, Maintain and Support Email security, enforce anti-phishing, DMARC/SPF/DKIM, and DLP policies.
• Provide support to secure cloud environments (Azure) using guardrails, encryption (TLS, CMK), Private Link, and NSGs.
• Design and manage network security controls (NGFW, IDS/IPS, WAF, NDR) and enforce segmentation.
• Administer Prisma SASE for secure remote access and Zero Trust enforcement.
• Configure and maintain Cisco ISE for NAC, posture assessment, and dynamic VLAN assignments.
• Operate vulnerability management tools (Defender/Qualys), prioritize remediation, and track SLA compliance.
• Prepare monthly executive security reports and recommend tuning/optimizing security systems.
• Stay updated on emerging threats, vulnerabilities, and regulatory requirements; drive continuous improvement.
• Serve as an escalation point for handling complex network security issues and incidents.
• Provide support to Monitor and troubleshoot issues across multi-vendor security platforms including:
• Palo Alto Firewalls, Cisco ASA and Cisco Identity Services Engine (ISE), Cloudflare WAF/DNS/SASE solutions, Microsoft Sentinel SIEM, Firewall Policy Management, PKI Infrastructure and Certificate Lifecycle Management
• Implement firewall rules, NAT policies, and access control changes in compliance with security policies.
• Support security reviews and audits by providing technical documentation and evidence.
• Participate in the creation and upkeep of SOPs and runbooks.
• Coordinate with engineering and vendor teams for major incidents and escalations.
• Assist in onboarding new systems into monitoring and logging tools (e.g., Sentinel).
• Handle change requests, upgrades, and patching activities in production environments.

Support PKI infrastructure by managing certificates and related configurations.