Job Position : Network Security Engineer

Exp-Range-10-15Years

Required Tech stack :Network Security, Fortigate ,Fortinet, Checkpoint,

Interview Date :14-Aug-26

Interview mode :Virtual

Venue : Kolkata

Must Have :
Min 10 years of experience in managing and supporting enterprise network security infrastructure for large-scale settings.
Administered and maintained Check Point Virtual Firewalls, including policy creation, rule optimization, NAT configuration, VPN management, threat prevention, and access control implementation.
Managed Fortinet firewall environments utilizing FortiManager and FortiAnalyzer for centralized policy management, log analysis, monitoring, and reporting.
Designed, configured, and supported Cisco ASA Site-to-Site and Remote Access VPN solutions to provide secure connectivity for business-critical applications and remote users.
Performed complex Layer 2 and Layer 3 network troubleshooting, diagnosing connectivity, routing, and security-related issues across enterprise networks.
Conducted packet-level analysis using Wireshark and TCPDump to identify network anomalies, security incidents, and performance bottlenecks.




Implemented and maintained firewall security policies in accordance with organizational security standards and compliance requirements.
Supported DNS, DHCP, and IP Address Management (IPAM) services through Infoblox platforms.
Utilized Linux/Unix command-line utilities for system administration, troubleshooting, automation, and log analysis.
Led security incident investigations, root cause analysis, and remediation activities to minimize operational impact and improve security posture.
Collaborated with infrastructure, cloud, security, and application teams to implement secure network architecture and firewall rule reviews.
Managed change requests, production deployments, maintenance activities, and risk assessments following ITIL best practices.
Ensured high availability, disaster recovery readiness, and operational excellence for network security infrastructure.
Created technical documentation, SOPs, network diagrams, and knowledge base articles to support operational teams and business stakeholders.
Mentored junior engineers and provided technical guidance on firewall technologies, VPN configurations, and network security best practices.

📌 Network Security Engineer Kolkata
🏢 Tata Consultancy Services
📍 Kolkata