Senior Network and Security Engineer

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.

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.

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.