Senior Network Security Engineer F5Firewall

Intertec Softwares Pvt Ltd; Dubai; On-site; AED 120,000 - 200,000; Full time

Job summary

A technology services company in Dubai is looking for a network engineer to plan and implement network upgrades, develop network architecture, and manage firewalls and disaster recovery plans. Candidates should have experience with three-tier network architecture and various firewall configurations. This role is critical to maintaining high availability and security in network operations.

Responsibilities

• Plan, schedule and implement network upgrades with minimal user impact.
• Develop and implement network architecture and drawings.
• Manage three-tier network architecture.
• Configure Alto Firewall and security policies.
• Configure perimeter firewall with integrations.
• Manage Cisco Wireless Controllers and SSIDs.
• Configure and manage DNS and DHCP pools.
• Manage IPS and disaster recovery plans.

Job description

Responsibilities

• Plan, schedule and implement network upgrades, implementations and migrations for clients in a timely manner and during times that will have the least impact on the users of the affected systems.
• Develop and implement the architecture and design of networks and network drawings.
• Manage three‑tier network architecture which includes core switches, distribution switches and access switches, leased lines and MPLS links with high availability.
• Configure Alto Firewall with active and passive modes and security policies, QOS, NAT, sub interfaces, aggregated interfaces, virtual routers and zones.
• Configure perimeter firewall with master/slave configuration VDOM, IPsec VPN, SSL VPN, vendor‑specific IP subnet, user integration with AD via LDAP, NAT configuration and traffic shaping.
• Manage Cisco Wireless Controllers 9800 with Active/Standby, all SSIDs integrated with ISE for 802.1X and vendor‑specific access.
• Configure and manage DNS and DHCP pool.
• Configure and manage IPS.
• Configure, design and manage F5 BIG‑IP LTM Load Balancer: create VIPs, create pools and associate pools with VIPs, create Persistence Profile, SSL Profile, SSL Offloading and iRules for high‑availability solution with network failover.
• Configure and manage F5 GTM devices for the DNS solution for external and internal websites, synchronized between DC and DR.
• Create and manage access policy in F5 APM for VPN based traffic.
• Maintain disaster recovery plans for IT operations and participate in organizational and customer level disaster recovery testing.