Role Description

Job Summary

We are seeking an experienced L3 Network Security Engineer to lead the design, architecture, optimization, and operational governance of enterprise network security platforms. The ideal candidate will provide technical leadership across firewall, web application firewall, network access control, and cloud security technologies while serving as the highest level of escalation for complex security incidents and projects.

The role requires robust expertise in Fortinet Firewalls, Cisco Firewalls, Azure WAF, Azure Firewall, F5, NAC (Cisco & Aruba), and Zscaler (ZIA/ZPA), along with a deep understanding of security architecture, Zero Trust principles, and enterprise network security operations.

Key Responsibilities

Security Platform Design & Architecture

• Lead the design, implementation, optimization, and lifecycle management of:
• Azure WAF & Azure Firewall
• Fortinet Firewalls
• Cisco Firewalls
• F5 Load Balancers
• NAC Solutions (Cisco ISE, Aruba ClearPass)
• Zscaler (ZIA & ZPA)





• Define and implement secure network architectures aligned with business and security requirements.
• Design advanced firewall security policies, network segmentation strategies, and Zero Trust architectures.
• Conduct security architecture reviews and recommend improvements to strengthen the organization's security posture.

Operations & Technical Leadership

• Act as the highest technical escalation point for complex network security incidents and problem management.
• Review and approve complex firewall changes and network security designs.
• Lead firmware upgrades, platform modernization initiatives, and lifecycle management activities.
• Manage vendor escalations and participate in major incident investigations and Root Cause Analysis (RCA).

Security Governance & Optimization

• Drive firewall migration, consolidation, and transformation projects.
• Perform firewall rule recertification, policy cleanup, and compliance-driven security initiatives.
• Co

📌 Senior Network Security (Thiruvananthapuram)
🏢 UST
📍 Thiruvananthapuram