Senior Infrastructure Engineer — Hybrid Cloud/On-Prem

Fruition Group Ireland; Dublin; Hybrid; EUR 80,000 - 100,000; Full time

Job summary

Fruition Group Ireland seeks a Senior Infrastructure Engineer for a Dublin-based, permanent role on a hybrid model. You will manage on‑premise and cloud Microsoft infrastructure, delivering high‑level support and engineering across Windows Server, AD, M365, Azure and virtualization platforms.

The role requires 5+ years' hands‑on experience, strong scripting with PowerShell, and robust networking knowledge. You’ll collaborate with stakeholders on infrastructure projects and security improvements.

Qualifications

• 5+ years' experience in senior infrastructure roles.
• Hands-on experience with Windows Server and Microsoft infrastructure technologies.
• Microsoft 365 administration including Exchange Online, SharePoint, Intune, Entra ID.
• Azure administration in hybrid environments.
• VMware/Hyper‑V virtualization experience.
• Strong networking knowledge: TCP/IP, DNS, DHCP, VLANs, VPNs, routing, switching.
• Enterprise on‑premise and cloud infrastructure management.
• PowerShell scripting and automation experience.
• Solid documentation and stakeholder management.

Responsibilities

• Manage, maintain, and support Microsoft infrastructure across on‑premise and cloud environments.
• Administer Windows Server, Active Directory, Group Policy, DNS, and DHCP.
• Manage Microsoft 365 including Exchange Online, SharePoint, Intune, Entra ID.
• Administer and support Microsoft Azure in hybrid environments.
• Manage virtualised environments using VMware and/or Hyper‑V.
• Provide advanced L3 infrastructure support and incident resolution.
• Implement and maintain security controls including MFA, Conditional Access, endpoint security, firewalls.
• Develop PowerShell scripts to automate repetitive tasks.
• Monitor performance, availability, capacity, and security; maintain documentation.
• Collaborate with internal stakeholders and external suppliers on infra projects.

Skills

Windows Server

Active Directory

Group Policy

DNS

DHCP

Microsoft 365

Exchange Online

SharePoint

Intune

Entra ID/Azure AD

Azure

VMware

Hyper-V

Networking (TCP/IP)

Networking (DNS)

Networking (DHCP)

VLANs

VPNs

Routing

Switching

PowerShell scripting

L3 support

Documentation

Tools

VMware

Hyper-V

Azure

Microsoft 365

Job description

Fruition Group Ireland seeks a Senior Infrastructure Engineer for a Dublin-based, permanent role on a hybrid model. You will manage on‑premise and cloud Microsoft infrastructure, delivering high‑level support and engineering across Windows Server, AD, M365, Azure and virtualization platforms.

The role requires 5+ years' hands‑on experience, strong scripting with PowerShell, and robust networking knowledge. You’ll collaborate with stakeholders on infrastructure projects and security improvements.