Network Engineer

Location: Dublin, Ireland

Duration: 12 months

Engagement Type: Contract- with opportunities for employment after

Role Overview

Junior Network Engineer will provide technical support to wider Technology teams, ensuring smooth day-to-day network operations. The role focuses on supporting enterprise Aruba-based network environments, including both wired and wireless infrastructure, with a strong emphasis on ClearPass-driven access control and segmentation.

Required Technical Skills

Aruba CX Networking (L2 & L3)

Implementation and troubleshooting

Spanning Tree Protocol (STP)

OSPF routing

Switching & Stacking Technologies

VSF (Virtual Switching Framework)

VSX (Virtual Switching Extension)

Core Networking Concepts

Strong understanding of IPv4 subnetting

VLAN segmentation and design principles

Aruba ClearPass

802.1X service profiles

Integration with Aruba CX 6300 edge switches

Dynamic segmentation

Deployment of colourless ports

Wireless Networking

Aruba WLAN (AOS8) deployments

Troubleshooting wireless environments

Key Responsibilities

• Network Onboarding & Configuration
• Assist with onboarding of new clients via ClearPass (wired and wireless)
• Domain PCs, IoT devices, and medical devices
• Support expansion and configuration of Aruba access points
• Configure VLANs and IP subnets as directed by Network Design Authority

Troubleshooting & Support

• Diagnose and resolve wired and wireless connectivity issues
• Support IT teams with onboarding of complex devices (e.g. medical/IoT)
• Troubleshoot general network issues across LAN and WLAN environments

Operations & Maintenance

• Perform day-to-day network operational tasks, including:
• Device backups
• Monitoring via IMC (Intelligent Management Center)
• Network health checks
• Replace faulty hardware (e.g. Aruba CX 6300 VSF switch stacks)

Upgrades & Improvements

• Plan and implement software upgrades for:
• Aruba AOS8 WLAN infrastructure
• Wired network environment