Senior Network & Cloud Security Engineer

Midland Steel Reinforcement Supplies; Portlaoise; On-site; EUR 60,000 - 90,000; Full time

Job summary

Midland Steel is seeking an experienced Network & Security Engineer to join the technical operations team in Ireland. The role focuses on secure design, support, and optimisation of on-premises and cloud infrastructure across multiple environments.

You will bring strong expertise in network security, firewall administration, cloud networking, Microsoft technologies, and infrastructure operations, taking ownership from inception to completion.

Qualifications

• Experience designing, supporting and securing network and cloud infrastructure across multiple environments.
• Hands-on firewall administration for enterprise platforms.
• Strong knowledge of VPNs, DNS/DHCP, and routing protocols.
• Proven ability to automate tasks with PowerShell.
• Experience with Azure networking and hybrid cloud environments.
• Administration of Microsoft 365 services and Entra ID is desirable.

Responsibilities

• Configure, monitor, and troubleshoot SonicWall firewalls and related security policies.
• Design and maintain NAT rules, DPI-SSL, CFS, and HA configurations.
• Implement and support Layer 2/3 networks, VLANs, and inter-VLAN routing.
• Manage switching, VLAN segmentation, trunking, and wireless networks.
• Deploy and manage Site-to-Site IPsec VPNs and remote access VPNs.
• Support on-premises to Azure/AWS hybrid connectivity.
• Perform network diagnostics, packet analysis, and QoS management.
• Create network diagrams and technical documentation.
• Serve as senior escalation point for complex infrastructure incidents.

Skills

SonicWall

Firewall Administration

Network Security

Cloud Networking

PowerShell

Azure

MS 365 Admin

Active Directory

DNS/DHCP

VLANs

Tools

SonicWall TZ/NSa

Intune

ExpressRoute

Veeam

Job description

Midland Steel is seeking an experienced Network & Security Engineer to join the technical operations team in Ireland. The role focuses on secure design, support, and optimisation of on-premises and cloud infrastructure across multiple environments.

You will bring strong expertise in network security, firewall administration, cloud networking, Microsoft technologies, and infrastructure operations, taking ownership from inception to completion.