Senior Network Security Engineer - Jeddah, KSA
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Key skills for this role
About the Role
DeepSource Technologies is seeking a Senior Network Security Engineer for a role in Jeddah, KSA, focusing on F5 advanced WAF, firewall policy cleanup, and IP/DNS governance. The position involves comprehensive network security assessment, secure execution of cleanup activities, and documentation.
Key Skills for This Role
Responsibilities
- Identify and clean up unused or orphaned IP addresses on F5 BIG IP load balancers
- Review, validate, and remove unused, duplicate, or obsolete firewall policies across HQ and DR data centers
- Ensure firewall and load balancer changes align with HA and DR requirements
- Perform comprehensive assessment of all devices, applications, databases, and network components using public IP addresses
- Analyze application, service, and security dependencies to determine impact of changes
- Classify firewall rules and DNS related entries based on criticality, usage, activity level, and business relevance
- Develop detailed cleanup and migration plans including sequencing, timelines, backups, and rollback procedures
- Design and allocate private IP address ranges ensuring compatibility with existing architecture
- Assess and analyze DNS records to identify unused, outdated, or invalid entries
- Remove or update invalid, obsolete, or unnecessary DNS records without impacting applications
- Execute cleanup and migration activities in a secure, controlled, and auditable manner
- Coordinate with application, systems, SOC, and operations teams to align firewall rules, NAT, routing, DNS, and access controls
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
- Bachelor’s degree in Computer Science, Information Technology, or related field (preferred)
- Certifications such as CCNP Security, F5 CA/CTS, NSE, or equivalent (preferred)
Full Job Posting
Job Description
- Deep technical experience on F5 advanced WAF
- Identify and clean up unused or orphaned IP addresses on F5 BIG IP load balancers
- Review, validate, and remove unused, duplicate, or obsolete firewall policies across HQ and DR data centers
- 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
- 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)
- Bachelor’s degree in Computer Science, Information Technology, or related field
- Certifications such as CCNP Security, F5 CA/CTS, NSE, or equivalent
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