Overview
The Network Architect contractor will play a key role in optimizing public IPv4 address management for a leading financial services client. They will collaborate with senior stakeholders to conduct in-depth technical assessments and provide strategic recommendations aimed at enhancing network governance and efficiency.
Responsibilities
- Discover and analyse large-scale public IPv4 estates across IPAM, DNS, CMDB, cloud, firewall and routing platforms.
- Validate address ownership using RIR/RDAP data and identify registry inconsistencies.
- Perform utilisation and optimisation assessments to identify unused, unknown and high-risk address space.
- Analyse BGP routing, origin ASNs, RPKI, ROAs and IRR data to assess routing posture and security.
- Develop remediation strategies covering consolidation, reclamation, transfer and governance improvements.
- Contribute to IPAM policy, lifecycle standards and Target Operating Models.
- Present findings and recommendations to technical teams and executive stakeholders.
Requirements
- Expert knowledge of IPv4/IPv6 addressing and enterprise-scale IP management.
- Strong experience with BGP, routing architecture and internet routing security.
- Knowledge of RPKI, ROAs, IRR and routing best practices.
- Experience with IPAM, DNS, CMDB, cloud networking, NAT and firewall platforms.
- Ability to analyse incomplete data and produce evidence-based recommendations.
- Excellent stakeholder engagement and consulting skills.
- Desirable: IPv4 transfer, leasing or monetisation experience.
- Certifications such as CCNP, CCIE, JNCIP or equivalent are preferred.