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 environments.
- 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