Position Summary: As Senior Network & Firewall Engineer at eSol Global, you will serve as the principal Level-3 network and security authority steering critical enterprise infrastructure across Dubai, UAE. Operating in high-availability, multi-vendor environments, this permanent leadership role is responsible for driving enterprise network architecture, complex firewall cutovers, and zero-trust perimeter defense. You will act as the technical cornerstone between infrastructure design and production operations, spearheading end-to-end migrations, capacity planning, and L3 technical escalations to maintain resilient, high-speed, and secure connectivity across corporate systems.
Detailed Job Description: The Senior Network & Firewall Engineer delivers comprehensive architectural oversight, hands‑on deployment, and advanced operational troubleshooting across complex enterprise networks and security boundaries. You will manage mission-critical routing, switching, and firewall estates spanning multi-vendor platforms including Cisco, Fortinet, Palo Alto Networks, and Huawei. Your day-to-day responsibilities encompass architecting secure network segmentations, executing zero-downtime data center and campus migrations, fine-tuning Layer 3 dynamic routing protocols, and establishing robust site-to-site and client VPN frameworks.
In this mission-critical L3 capacity, you will harden enterprise security postures by authoring and maintaining next-generation firewall policies, implementing intrusion prevention architectures, and conducting deep-dive packet-level diagnostics during network anomalies. The role demands an experienced CCIE-certified professional capable of bridging high-level design specifications with low-level implementation details, leading vendor coordination, and enforcing rigorous configuration governance. Collaborating with cross-functional technical teams and client stakeholders, you will safeguard five‑nines uptime, eliminate security vulnerabilities, and ensure resilient digital operations across Dubai’s enterprise landscape.
Key Responsibilities: - Lead the architectural design, deployment, configuration, and migration of multi-vendor enterprise network and security infrastructures across Dubai, UAE.
- Provide Level-3 (L3) engineering support and deep-dive technical escalation resolution for mission-critical routing, switching, and firewall outages.
- Configure, harden, and manage next‑generation firewalls across multi-vendor estates, specifically Fortinet FortiGate, Palo Alto Networks, and Cisco security appliances.
- Direct large-scale enterprise network migration projects, cutovers, and infrastructure modernization initiatives with zero service disruption.
- Administer and optimize advanced dynamic routing protocols, including BGP, OSPF, and multi-protocol label switching (MPLS) architectures.
- Deploy, configure, and maintain enterprise campus and data center switching topologies utilizing Cisco Catalyst/Nexus and Huawei enterprise platforms.
- Establish and maintain secure IPSec site-to-site VPN tunnels, SSL VPN remote access solutions, and zero‑trust network segmentation policies.
- Conduct comprehensive packet capture analyses, root‑cause investigations (RCA), and network performance optimization using packet inspection tools.
- Maintain detailed network architecture blueprints, High‑Level Designs (HLD), Low‑Level Designs (LLD), standard operating procedures, and change management logs.
- Collaborate with infrastructure architects, security operations centers, and technology vendor engineering teams to uphold stringent SLA benchmarks.
Required Qualifications & Skills: - Bachelor’s degree in Computer Science, Information Technology, Telecommunications Engineering, or a closely related technical field.
- Minimum of 8 to 10+ years of hands‑on professional engineering experience in enterprise network engineering and network security operations.
- Active Cisco CCIE Enterprise (Enterprise Infrastructure / Routing & Switching) certification (Mandatory requirement).
- Proven track record in configuring and troubleshooting multi‑vendor environments spanning Cisco, Fortinet, Palo Alto Networks, and Huawei.
- In‑depth technical proficiency with dynamic routing protocols (BGP, OSPF), VLAN segmentation, STP, VXLAN, and high‑availability topologies.
- Demonstrated hands‑on expertise in deploying, administering, and migrating enterprise Next‑Generation Firewalls (NGFW) and security policies.
- Extensive background providing L3 technical escalation support and leading critical network troubleshooting in high‑uptime enterprise environments.
- Proven capability in planning and executing complex network infrastructure migrations, data center cutovers, and hardware refresh programs.
Nice‑to‑Have Skills: - Vendor‑specific security certifications such as Palo Alto PCNSE, Fortinet NSE 4–8, or Huawei HCIE.
- Hands‑on experience with network automation and orchestration using Python, Ansible, or Terraform.
- Exposure to public cloud networking and hybrid connectivity across Amazon Web Services (AWS) or Microsoft Azure.
- Familiarity with Network Access Control (NAC) systems such as Cisco ISE or Aruba ClearPass.
- Prior working experience delivering network consulting or managed infrastructure services within Dubai or the broader UAE region.
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