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.
- Solid troubleshooting and analytical skills.
- Ability to review technical designs and make independent architecture decisions.
- Good understanding of change management, implementation methodology and operational handover.
- Strong 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