CASTILLE
Network Engineer- Contract
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CASTILLE IS HIRING!
Join the Castille Global Teams!
Role- Network Engineer (Contract)
Work Mode- Remote
Engagement Type: Project-based Assignment; B2B Contract (Outside IR35)
Duration: 6 months with auto renew
Be part of our Global Engineering Network!
One of our clients, a leader in the Telecommunications sector, is looking for a Network Engineer to lead the design, deployment, and optimization of enterprise network infrastructure. The ideal candidate will have deep expertise across Cisco’s Data Centre and Campus fabric technologies, specifically ACI (Application Centric Infrastructure) and SDA (Software-Defined Access).
Key Deliverables
Cisco ACI (Data Centre) Architecture & Operations
- Design, deploy, and manage ACI fabric operations, including Multi-Site and Multi-Pod architectures.
- Configure and maintain core ACI constructs: Tenants, VRFs, EPGs, and Contracts.
- Perform APIC administration and manage L3Out integration with external networks.
- Lead data centre migration projects, ensuring minimal downtime and seamless integration with existing firewall and load-balancer infrastructure.
- Architect Disaster Recovery (DR) solutions and ensure healthcare data centre resiliency.
- Implement ACI automation using Terraform and Ansible.
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Cisco SDA (Campus Fabric) Architecture & Deployment
- Lead SDA fabric deployment and Catalyst Center administration.
- Implement Underlay and Overlay concepts using VXLAN and LISP fundamentals.
- Deploy and manage Fabric Edge and Border nodes.
- Integrate Cisco ISE for dynamic policy enforcement and SGTs (Scalable Group Tags).
- Design clinical network segmentation and support multi-campus healthcare deployments.
- Oversee wireless fabric integration and automated provisioning/assurance.
- Troubleshoot Layer 2 and Layer 3 networks, including VXLANs, STP, EtherChannel, and switch stacking.
- Manage routing protocols: OSPF, BGP, EIGRP, and Static Routing.
- Optimise QoS for real-time healthcare applications (Voice, Video, Clinical Systems, VoIP/VoWiFi).
- Implement network segmentation and security zoning specific to healthcare compliance.
- Utilise network automation tools (Catalyst Center, Ansible, APIs) and perform advanced troubleshooting via CLI, telemetry, and packet analysis.
Requirements
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- Cisco ACI: Proven experience in fabric operations, APIC administration, and tenant/VRF/EPG management.
- Hands-on experience with Catalyst Center, fabric deployment, and VXLAN/LISP.
- Strong command of BGP, OSPF, EIGRP, VLANs, STP, and HA protocols.
- Demonstrated experience in migrating complex data centre environments.
- Healthcare Experience: Experience with clinical network segmentation, resiliency design, and clinical application optimisation.
- Proficiency with Terraform, Ansible, or Python for network automation.
- Advanced skills in packet analysis, telemetry, and CLI-based diagnostics.
Nice-to-Have Skills
- Multi-Site / Multi-Pod ACI architecture experience.
- Firewall and load-balancer integration (e.g., Palo Alto, F5).
- Disaster Recovery architecture design.
- Wireless fabric integration within SDA.
- Dynamic policy enforcement using SGTs and ISE.
- Multi-campus healthcare deployments.
- QoS for real-time healthcare applications (voice, video, clinical systems).
- Network automation using Catalyst Center, Ansible, or APIs.
Interested and qualified candidates are encouraged to apply via Iboampong@castillians.com
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