Sr. Network Engineer
Skills
About This Role
The Job Description
- 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- Assess and analyze all DNS records to identify unused, obsolete, or outdated entries.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
- 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.
- 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.
- 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.
- Tagged as: ccie , ccnp , DNS , ipv4 , ipv6 , jncie. , jncip , NAT , vpns
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