Senior Security Engineer

Location: Bengaluru

Job Title:

Senior Network Security Operations Engineer
Department:  Security Engineering

Reports To:

Manager, Security Infrastructure Operations

Location:

Bangalore, India
About the Team/Department:
The Security Infrastructure Operations team is responsible for maintaining, monitoring, and improving enterprise network security infrastructure across data center, cloud-connected, and corporate network environments. The team manages critical security platforms including firewalls, intrusion prevention systems, web application firewalls, access control solutions, VPN services, and related monitoring tools to ensure secure, stable, and compliant network operations.

Position Summary
The Senior Network Security Operations Engineer is responsible for the secure, reliable, and efficient operation of enterprise network security infrastructure. This role requires advanced hands-on expertise in Cisco ASA, Cisco FTD, Cisco FMC, Cisco ISE, IPS technologies, F5 Web Application Firewall, and F5 Firewall platforms. The position serves as a senior technical escalation point for complex operational issues, incident response, change implementation, platform lifecycle activities, policy governance, and continuous improvement initiatives.

The successful candidate will demonstrate strong technical judgment, ownership, documentation discipline, stakeholder communication, and the ability to support business-critical security operations in a high-availability environment.

Key Responsibilities
Own the day-to-day administration, monitoring, maintenance, and operational support of Cisco ASA, Cisco FTD, Cisco FMC, Cisco ISE, IPS, F5 WAF, and F5 Firewall platforms.
Implement and review firewall policies, access control rules, NAT, VPN configurations, security objects, routing-related changes, and periodic rule optimization activities in accordance with approved change management processes.
Monitor platform health, availability, logs, alerts, utilization, capacity, and performance to ensure proactive identification, escalation, and resolution of operational risks.
Analyze and resolve complex network security incidents involving firewall drops, IPS events, authentication failures, application access issues, routing dependencies, and connectivity disruptions.
Administer Cisco FMC-managed FTD environments, including access control policy deployment, intrusion policy tuning, device health validation, configuration review, and operational troubleshooting.
Administer Cisco ISE services supporting network access control, including 802.1X, MAB, RADIUS, TACACS+, profiling, posture, policy sets, endpoint visibility, and authentication troubleshooting.
Support F5 WAF and F5 Firewall operations, including application protection policy review, traffic analysis, virtual server troubleshooting, security policy tuning, and coordination with application owners.
Lead technical investigation, root cause analysis, post-incident reviews, corrective actions, and preventive measures for priority incidents and recurring operational issues.
Plan, validate, and execute platform upgrades, patching, configuration backups, certificate renewals, device migrations, health checks, and preventive maintenance activities.
Maintain accurate operational documentation, including SOPs, runbooks, network diagrams, change plans, rollback procedures, configuration records, and knowledge base articles.
Collaborate with SOC, NOC, application, server, cloud, identity, compliance, audit, and vendor teams to support incidents, changes, projects, risk reviews, and service improvement activities.
Provide technical guidance to L1/L2 engineers, review escalations, share knowledge, and contribute to operational maturity, standardization, and process improvement.

Required Qualifications …