Sr. Network Engineer (IP Addressing, Network Migration, DNS)

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• to identify unused, obsolete, or outdated entries.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.

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