Desktop Support / IT Support-L2-Ireland

Oikotechno Japan Co., Ltd; Athlone; On-site; EUR 75,000 - 95,000; Full time

Job summary

Oikotechno Japan Co., Ltd is seeking a highly motivated Senior Desktop Systems Administrator to support a large-scale enterprise infrastructure on-site in Ireland. You will manage client compute devices, operating systems, and mobility platforms, ensuring stability across locations.

Responsibilities include deploying Windows, macOS, and Linux images; managing AD, GPO, JAMF Pro, and MECM/Intune lifecycle; and supporting Microsoft 365 workloads with a focus on security and compliance.

Qualifications

• 4+ years of desktop systems administration in a large-scale enterprise environment.
• Experience deploying Windows, macOS, and Linux images and supporting EUC environments.
• Familiarity with IT asset management and security best practices.

Responsibilities

• Provide expert-level support for client compute devices in a large-scale enterprise environment.
• Manage and troubleshoot WAN/LAN, TCP/IP, DHCP, DNS, VPN, and Active Directory.
• Deploy, configure, and support Windows, macOS, and Linux (Ubuntu, CentOS, RHEL).
• Validate and troubleshoot GPO/RSoP and JAMF configuration profiles on endpoints.
• Manage user accounts and directory maintenance in Active Directory.
• Support Microsoft 365 suite including Teams, SharePoint, Exchange/Outlook, and Office apps.
• Configure and support mobile devices via MDM (iOS/Android).
• Support videoconferencing systems and Cisco room systems.
• Manage enterprise network printing, scanning, and finishing operations.
• Participate in IT security incident response and site relocations.
• Collaborate with IT security on patching and device hardening.

Skills

Desktop support

Windows admin

macOS deployment

Linux systems

Active Directory

Group Policy (GPO)

JAMF Pro

MDM

Intune

SCCM

Microsoft 365

Exchange Online

PowerShell

Python

Bash

Education

Bachelor's degree in IT/CS/Engineering

Tools

SCCM

Intune

JAMF Pro

ServiceNow

Remedy

Jira

Job description

Senior Desktop Systems Administrator

We are seeking a highly motivated and technically skilled Desktop Systems Administrator to support our enterprise infrastructure. This on-site role involves managing and maintaining client compute devices, operating systems, mobile platforms, and supporting technologies across multiple locations. The ideal candidate will have strong technical expertise, excellent problem-solving skills, and the ability to work independently in a fast-paced environment.

Key Industry Keywords: Desktop Support, Endpoint Management, Windows Administration, macOS Deployment, Linux Systems, Active Directory, Group Policy (GPO), JAMF Pro, Microsoft 365, Exchange Online, Mobile Device Management (MDM), IT Service Desk, Enterprise Infrastructure, Systems Integration, IT Security, Incident Response, Network Protocols (TCP/IP, DHCP, DNS, VPN), IT Asset Management (ITAM), Cisco Collaboration, Video Conferencing Systems, Office 365, Windows Imaging, System Deployment, Client Compute Solutions, End-User Computing (EUC).

Job Highlights

• Location: On-site — no remote work available


• Work Schedule: Core business hours (8:00 AM – 6:00 PM); occasional after-hours support may be required


• Team Structure: Collaborate with cross-functional IT teams in a large-scale enterprise environment

Key Responsibilities

• Provide expert-level support for client compute devices (laptops, desktops, peripherals) and accessories in a large-scale enterprise environment.


• Manage and troubleshoot infrastructure technologies including WAN/LAN, TCP/IP, DHCP, DNS, VPN, and Active Directory.


• Deploy, configure, and support operating systems including Windows, macOS, and Linux (Ubuntu, CentOS, RHEL).


• Validate and troubleshoot Group Policy Object (GPO) Resultant Set of Policy (RSoP) and JAMF configuration profiles on endpoints.


• Manage user account lifecycle: creation, modification, deactivation, permissions, and directory maintenance (e.g., Active Directory).


• Support and troubleshoot Microsoft productivity suite: Microsoft Teams, SharePoint, Exchange/Outlook, and Office applications.


• Configure, deploy, and support mobile devices (Apple iOS and Android) across enterprise environments using Mobile Device Management (MDM) solutions.


• Support single- and multi-site videoconferencing solutions and advanced conference room control systems (Cisco experience is a plus).


• Manage enterprise network printing infrastructure, including high-volume scanning-to-email and finishing unit operations.


• Participate in IT security incident response, including system imaging, malware remediation, and forensic support.


• Plan and execute user and site relocations, including office moves and full-scale site migrations.


• Collaborate with IT security teams to enforce endpoint compliance, patch management, and device hardening best practices.


• Participate in continuous improvement initiatives for End-User Computing (EUC), automation, and service delivery optimization.

Preferred Qualifications

• 4+ years of experience in desktop systems administration and/or service desk administration in a large-scale enterprise environment.


• Ability to work with minimal supervision — self-motivated, proactive, and solution-oriented.


• Experience with client application packaging and deployment across Windows, macOS, and Linux platforms (e.g., using SCCM, Intune, or JAMF).


• Familiarity with IT asset management (ITAM) tools and standard inventory practices.


• Bachelor’s degree in Information Technology, Computer Science, Engineering, or a related field.


• Relevant certifications (e.g., CompTIA A+, Microsoft Certified: Modern Desktop Administrator Associate, Apple Certified Support Professional, JAMF Certified Administrator, or Cisco CCNA Collaboration).


• Hands-on experience with Microsoft Intune, Microsoft Endpoint Configuration Manager (MECM), or JAMF Pro for endpoint lifecycle management.


• Knowledge of scripting languages (e.g., PowerShell, Bash, Python) for automation of routine desktop administration tasks.

Skills: microsoft 365 support (outlook, teams, sharepoint, office apps),os deployment & imaging,itsm tools (servicenow, remedy, jira, etc.),macos / apple device support,desktop support / end user computing (euc),hardware troubleshooting (laptops, desktops, printers, docking stations),linux support (ubuntu, centos, rhel),active directory (user administration, permissions, group management),jamf administration / mac device management,windows 10/11 administration & troubleshooting