One Month Contract position

Contract will be extended based on requirement.

Experience : 8+ years

Key Responsibilities

- Review and validate HLD, LLD, network architecture and security designs. - Provide technical leadership for enterprise LAN, WAN, WLAN, SD-WAN and network securityimplementations. - Design and validate FortiGate firewall, HA, SD-WAN, VPN, NAT and security policies. - Provide architecture and implementation guidance for enterprise switching and wireless infrastructure. - Design and validate VLAN, IP addressing, routing, segmentation and access-control architecture. - Guide implementation of static routing, BGP, OSPF and other routing protocols as applicable. - Design and validate WAN redundancy, ISP failover and SD-WAN path selection. - Provide guidance for IPsec VPN and inter-site connectivity. - Ensure appropriate network segmentation and security controls between users, servers, guest, IoT, management and other network segments. - Review and guide AAA, RADIUS/TACACS+, DNS, DHCP, NTP, SNMP and Syslog integration. - Ensure integration with NMS, monitoring, logging and configuration-backup platforms. - Provide technical guidance for high availability, redundancy and disaster-recovery connectivity. - Review configuration templates and provide implementation guidance to network engineers. - Lead troubleshooting of complex network, firewall, routing, SD-WAN and connectivity issues. - Conduct technical reviews during Day-0, Day-1 and Day-2 implementation activities. - Define and review implementation plans, MOPs, test plans and rollback procedures. - Lead technical validation and UAT/acceptance testing. - Validate failover, redundancy, connectivity, segmentation and security-policy functionality. - Review post-implementation configurations against approved design. - Ensure as-built documentation and configuration records are complete and accurate.



- Conduct knowledge transfer to NOC/operations and implementation teams. - Provide technical recommendations, risk identification and remediation plans throughout the project lifecycle.

Technical Skills

- FortiGate / FortiOS - FortiGate HA and SD-WAN - IPsec VPN - Firewall policies and NAT - Enterprise LAN/WAN architecture - Aruba/Cisco switching - Enterprise WLAN - VLAN and network segmentation - BGP / OSPF / Static Routing - ISP/WAN technologies - Network monitoring and management - SNMP / Syslog - RADIUS / TACACS+ - DNS / DHCP / NTP - High Availability and DR - Network security architecture - Network troubleshooting - Network documentation and technical governance

Experience & Qualifications

- 8+ years of experience in enterprise networking and network security. - Strong experience in Network Security Architecture and implementation. - Hands-on experience with FortiGate and enterprise networking technologies. - Experience working on large-scale, multi-site or greenfield infrastructure projects. - Strong understanding of network security, routing, switching, SD-WAN and WLAN. - Experience leading or guiding implementation engineers. - Strong troubleshooting and analytical skills. - Ability to review technical designs and make independent architecture decisions. - Good understanding of change management, implementation methodology and operational handover. - Solid communication, documentation and stakeholder-management skills.

Key Deliverables

- Architecture and design review - Network/security implementation guidance - Configuration templates and technical standards - Firewall and SD-WAN design validation - Implementation/MOP review - Test plan and acceptance validation - HA/failover validation - Troubleshooting and technical issue resolution - As-built documentation - Operational runbooks - Knowledge-transfer sessions - Final technical handover

📌 Network Security Engineer (Chennai)
🏢 TECEZE
📍 Chennai