Network Engineer

Job Title: Network Engineer

Type: Freelance/Contract

Start: ASAP

Location: Belfast – Hybrid

Linnk are seeking an experienced Network Engineer to support a critical migration project for a market leading service provider. The project involves transitioning from a legacy network infrastructure to a modern Aruba CX 10K-based topology with enhanced security and segmentation delivered via Aruba Pensando PSM.

This is a hands-on, hybrid role that will include design, implementation, staging, knowledge transfer, and support for migration activities within a live datacentre environment.

Key Responsibilities:

• Design and implement a 2-tier Aruba CX Data Centre network, including Layer 3 topology with Aruba 10K Top-of-Rack (ToR) switches and 8360 core switches.
• Develop and document migration strategies that prioritise high availability and service continuity during transition.
• Produce Detailed Low-Level Designs (DLD) for the proposed solution, ensuring seamless integration with the client’s existing Cisco and Comware-based infrastructure during interim migration phases.
• Lead the build-out of the underlay network within a pre-staging/Dev Lab environment located on customer premises.
• Manage and support routing protocol integration, primarily BGP and OSPF, to connect the CX network with the wider campus and hospital networks.
• Conduct a structured test phase by migrating select non-critical production and development systems to validate Pensando PSM capabilities and traffic flow via Elba processors.
• Assist with IP gateway migration, traffic re-routing, and planning for secure remote access through OOBM if required.

Required Skills & Experience:

• Demonstrated expertise in Aruba CX Data Centre design and implementation, particularly with Aruba 10K and 8360 series switches.
• Strong experience with network migration planning and execution in live environments.
• Proven capability to develop detailed network design documentation for multi-vendor integration scenarios.
• In-depth understanding of Aruba Pensando PSM for security segmentation and policy enforcement.
• Solid knowledge of routing protocols (BGP and OSPF) and their application in complex enterprise environments.

Desirable:

• Prior experience with healthcare or other high-availability environments.
• Familiarity with secure remote access design, especially leveraging OOBM networks.
• Aruba certifications/ CCIE/ CCNP