Senior Network Security Engineer – Riyadh, KSA Jobs in Cairo, Cairo, Egypt at DeepSource Technologies

Title: Senior Network Security Engineer – Riyadh, KSA

Company: DeepSource Technologies

Location: Cairo, Cairo, Egypt

Deep technical experience on F5 advanced WAF
Identify and clean up unused or orphaned IP addresses on F5 BIG-IP load balancers to improve performance, efficiency, and manageability
Review, validate, and remove unused, duplicate, or obsolete firewall policies across HQ and DR data centers while maintaining security posture and compliance
Ensure firewall and load balancer changes are aligned with high availability (HA) and disaster recovery (DR) requirements

Network & Security Assessment

Perform a comprehensive assessment of all devices, applications, databases, and network components using public IP addresses
Analyze application, service, and security dependencies to determine the potential impact of IP, firewall, and load balancer changes
Classify firewall rules and DNS-related entries based on criticality, usage, activity level, and business relevance

IP Addressing & DNS Governance

Develop detailed cleanup and migration plans including sequencing, timelines, backups, and rollback procedures
Design and allocate private IP address ranges, ensuring compatibility with existing network and security architecture
Assess and analyze DNS records to identify unused, outdated, or invalid entries related to applications and security controls
Remove or update invalid, obsolete, or unnecessary DNS records while ensuring no impact on applications or end users

Secure Execution & Validation

Execute cleanup and migration activities in a secure, controlled, and auditable manner, ensuring uninterrupted service continuity
Coordinate with application, systems, SOC, and operations teams to align firewall rules, NAT, routing, DNS, and access controls
Perform post-change testing and validation to confirm service availability, security enforcement, and performance stability

Governance, Review & Documentation

Establish periodic review procedures for firewall rules, F5 configurations, IP addressing, and DNS records to ensure ongoing accuracy and security
Ensure cleanup activities do not negatively impact applications, services, or end users
Maintain comprehensive documentation for all activities, including changes implemented, issues encountered, root cause analysis, and approved remediation actions
Support audit, compliance, and regulatory requirements through proper documentation and change tracking

Requirements

Strong hands-on experience with firewalls (NGFW), security policies, NAT, and access control management
Proven expertise in F5 BIG-IP (LTM), including VIPs, Self IPs, SNATs, and HA configurations
Solid understanding of enterprise IP addressing, DNS, routing, and network security architecture
Experience operating in HQ / DR, high-availability, and mission-critical environments
Strong knowledge of change management, rollback planning, and risk mitigation

Education & Certifications (Preferred)

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