Senior Network and Security Engineer

Job Description

Design, deploy and hand over enterprise security and data-centre projects for CNS customers across the UAE. The role is hands-on: the engineer leads implementations end to end - Next-Gen Firewalls, Zero Trust, NAC, F5 application delivery and Cisco ACI - and acts as the technical escalation point for the team.

DUTIES & RESPONSIBILITIES:

Design and architecture

• Gather customer requirements and produce High-Level Design (HLD) and Low-Level Design (LLD) documents for security and data-centre solutions.
• Design segmentation, firewall policy, Zero Trust access and NAC policy models aligned with customer security standards.
• Review existing customer environments and recommend hardening, migration and consolidation paths.

Deployment and migration

• Lead end-to-end deployments: staging, configuration, integration, cut-over and post-go-live support.
• Plan and execute firewall and load-balancer migrations (policy conversion, rule clean-up, rollback plans) with minimal downtime.
• Integrate security platforms with AD/LDAP, RADIUS/TACACS+, PKI, SIEM and SOAR.
• Write and run User Acceptance Test (UAT) plans and deliver as-built documentation and knowledge transfer to customers.

Operations and support

• Act as L3 escalation for network and security incidents; lead root-cause analysis for major incidents.
• Carry out preventive maintenance (PM) health checks, firmware upgrades and vulnerability remediation within agreed maintenance windows.
• Meet SLA targets on assigned tickets and keep ticketing tools up to date.

Team and customer delivery

• Support pre-sales with solution sizing, BoQ review, SOW and RFP technical responses.
• Present technical status to customer stakeholders and internal management.

Qualifications

Education:

Minimum :

• Bachelor’s degree in Computer Science, Electrical/Telecom Engineering or IT (or equivalent experience).
• At least one of: CCNP Security or CCNP Enterprise / Data Center; PCNSE; Fortinet NSE 7 / FCSS; F5 Certified Technology Specialist (301/302/303).

Desired:

• CCIE Security / Data Center / Enterprise.
• Cisco ISE or ACI specialist certification.

Experience:

Minimum:

• Minimum 10 years in enterprise networking, including 5+ years delivering network security projects.

Desired:

• System integrator or managed-services experience in the UAE/GCC.
• Hands-on delivery of multi-vendor firewall and F5 migrations.

Additional Information

Skills & Abilities:

Minimum:

• Next-Gen Firewall - Palo Alto, FortiGate, Cisco FTD/FMC: HA deployments, policy migration, IPS, URL filtering, SSL decryption, VPN.
• Fortinet Security Fabric - FortiManager, FortiAnalyzer, FortiEMS, FortiZTP, FortiSandbox, FortiADC, FortiMail.
• Zero Trust / ZTNA / SASE - ZTNA rollouts replacing legacy VPN; IdP integration (Entra ID, Okta) and MFA.
• Network Access Control - Cisco ISE, Aruba ClearPass, FortiNAC: 802.1X, MAB, guest/BYOD, posture, profiling, TrustSec.
• Application delivery - F5 BIG-IP LTM, GTM, Advanced WAF, APM; F5OS / rSeries / VELOS.
• Data-centre fabric - Cisco ACI (APIC), Nexus 9000: fabric bring-up, tenants/VRF/BD/EPG, L3Out, service graphs.
• Layer 2 / Layer 3 - VLANs, STP, LACP, vPC; BGP, OSPF, EIGRP, VRF, HSRP/VRRP, VXLAN EVPN.
• Zero-touch SD-WAN - Fortinet SD-WAN (FortiZTP + FortiManager) large-scale branch rollouts.

Desired:

• Security operations - SIEM (Splunk, QRadar), EDR, vulnerability scanners, CIS hardening.
• Automation - Python, Ansible, REST APIs, Terraform for bulk configuration and policy migration.
• Clear written English for HLD/LLD, method statements, change requests and customer reports.
• Valid UAE driving licence; willing to work maintenance windows and join an on-call rota.

Compliance with policies and procedures based on the ISO standards adopted by CNS.