IT Systems Administrator

QT9 Software; Killarney Municipal District (2014-2019); On-site; EUR 40,000 - 60,000; Full time

Job summary

A technology company in Killarney, Ireland, is looking for an IT Systems Administrator to provide full-stack infrastructure support. The candidate will manage enterprise applications, network services, and server infrastructure, while also providing technical support. Applicants should have a degree in IT or Computer Science and 3-5 years of relevant experience. Proficiency in Microsoft 365, networking fundamentals, and Windows Server administration is required.

Qualifications

• 3-5 years in IT support or system administration.
• Experience administering Microsoft 365 and Azure AD.
• Proficient in networking fundamentals (TCP/IP, DHCP, DNS).

Responsibilities

• Provide support for laptops, desktops, and enterprise applications.
• Manage server and virtualization infrastructure.
• Troubleshoot network services and maintain vendor relationships.

Skills

IT support

Systems administration

Microsoft 365

Networking fundamentals

Windows Server

PowerShell automation

Education

Associate’s or Bachelor’s degree in IT or Computer Science

Tools

Microsoft 365

Azure AD

VMware

SQL Server

Veeam

Job description

IT Systems Administrator

Killarney, Ireland V93 W9AK | Full-Time

Job Summary

We’re seeking a Full-Stack Infrastructure & Support professional to provide first- and second-level technical support and optimize our end-to-end technology environment. This individual reports to the Director of IT Security (USA) and supports both Ireland and U.S. operations, utilizing time zone differences within a follow-the-sun support model. The role blends user support with advanced systems administration and infrastructure management. This is an excellent opportunity for a proactive systems administrator who enjoys owning infrastructure, strengthening security, and continuously improving IT operations.

What You’ll Do

You will provide responsive support for laptops, desktops, office devices, and enterprise applications while administering and supporting Microsoft 365 (Azure AD, Exchange, SharePoint, OneDrive, Teams), Active Directory, VPN, and access controls across cloud and on-prem environments. You’ll manage server and virtualization infrastructure including VMware, Hyper‑V, Windows Failover Clustering, IIS, SQL Server (2019/2022), and Unix‑based systems, while overseeing backup and disaster recovery solutions (Veeam, Zerto), SMTP configuration, load balancing, and certificate management. This role also includes troubleshooting network services (TCP/IP, DNS, DHCP), supporting physical security systems and IT asset management, maintaining vendor relationships (VOIP, ISP, cellular), automating processes using PowerShell, tracking requests through a ticketing system, and providing occasional after‑hours support as needed.

Requirements

• Associate’s or Bachelor’s degree in IT, Computer Science or related field (or equivalent experience) preferred.
• 3‑5 years in IT support or system administration.
• Microsoft 365 and Azure AD administration.
• Active Directory and Group Policy management.
• Networking fundamentals (TCP/IP, DHCP, DNS).
• Windows Server administration.