Sr.Network Engineer (IP Addressing, Network Migration, DNS) Riyadh, Saudi Arabia

Overview

Key Responsibilities

• Conduct a **comprehensive assessment** of all servers, applications, databases, and network devices currently using public IP addresses.
• Develop a **detailed IP migration plan** covering timelines, phased execution, backup strategies, and service rollback procedures when required.
• Perform **application and service dependency analysis** to identify and mitigate the impact of IP address migration on interconnected systems.
• Design and allocate **new private IP address ranges**, ensuring full compatibility with the existing network architecture and infrastructure standards.
• Execute the migration from public to private IP addresses in a **secure and controlled manner**, while maintaining continuous operation of business-critical applications and services.
• Coordinate with security, systems, application, and operations teams to align firewall rules, routing, NAT, DNS, and access controls with the new private addressing model.
• Perform **post-migration validation and testing** to confirm service availability, performance, and network stability.
• Prepare and maintain **comprehensive documentation** for all migration phases, including implemented changes, encountered issues, root causes, and applied solutions.
• Assess and analyze **all DNS records** to identify unused, obsolete, or outdated entries.
• Classify DNS records based on **criticality, activity level, and operational validity**.
• Remove or update **invalid, obsolete, or unnecessary DNS entries** in accordance with approved change procedures.
• Ensure that DNS cleanup activities **do not impact applications, services, or end users**.
• Establish **periodic review procedures** to maintain the accuracy and health of DNS records on an ongoing basis.
• Document **all DNS review, cleanup activities, and applied changes** for audit, compliance, and operational reference.

**Requirements** **Required Technical Skills & Experience**

• Strong expertise in **enterprise network design**, IP addressing (IPv4/IPv6), subnetting, and routing protocols.
• Hands-on experience with **IP address migration projects** in large-scale environments (on-prem, cloud, or hybrid).
• Solid knowledge of **firewalls, load balancers, DNS, NAT, VPNs, and network security controls**.
• Experience working with **high-availability and mission-critical environments**, ensuring zero or minimal downtime.
• Ability to analyze complex **application-to-network dependencies**.
• Familiarity with **change management, rollback planning, and disaster recovery practices**.

Soft Skills & Professional Competencies

• Strong analytical and problem-solving skills
• Excellent documentation and technical reporting capabilities
• Ability to work under pressure and manage high-risk infrastructure changes
• Effective communication with technical and non-technical stakeholders

Education & Certifications (Preferred)

• Bachelor’s degree in Computer Science, Information Technology, or a related field
• Relevant certifications such as **CCNP/CCIE, JNCIP/JNCIE, Infoblox Technical Certifications or equivalent** are highly prefer.