Desktop Support / IT Support-L2

Oikotechno Japan Co., Ltd; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

Oikotechno Japan Co., Ltd is seeking a Senior Desktop Systems Administrator to support our enterprise infrastructure in Singapore. The role is on-site, focusing on client compute devices, cross-platform OS management, and end-user compute environments in a large corporate setting.

You will troubleshoot AD, GPO, JAMF Pro, MDM, and productivity suites, while coordinating with IT security, network teams, and service desk to ensure reliable operations and strong endpoint security.

Qualifications

• 4+ years of desktop systems administration in a large-scale enterprise environment.
• Experience with packaging and deployment across Windows, macOS, Linux (SCCM/Intune/JAMF)
• Knowledge of IT asset management and inventory practices.

Responsibilities

• Provide expert-level support for client compute devices in a large-scale enterprise.
• Manage and troubleshoot WAN/LAN, TCP/IP, DHCP, DNS, VPN, and Active Directory.
• Deploy, configure, and support Windows, macOS, and Linux operating systems.
• Validate GPO/RSoP and JAMF configuration profiles on endpoints.
• Manage user accounts lifecycle and directory maintenance (Active Directory).
• Support Microsoft productivity suite: Teams, SharePoint, Exchange/Outlook, Office apps.
• Configure and support mobile devices via MDM solutions.
• Support videoconferencing solutions and Cisco-based room systems.
• Manage enterprise network printing, scanning-to-email, and finishing units.
• Participate in IT security incident response and patching.
• Plan user/site relocations and site migrations.
• Collaborate with IT security on endpoint compliance and hardening.
• Contribute to EUC automation and service delivery improvements.

Skills

Desktop Support

Endpoint Management

Windows Admin

macOS Deployment

Linux Systems

Active Directory

Group Policy

JAMF Pro

Microsoft 365

Exchange Online

MDM

IT Security

Incident Response

Networking TCP/IP

VPN

ITAM

Cisco Collaboration

Video Conferencing

PowerShell

Bash

Python

SCCM

Intune

MECM

Education

Bachelor's degree in Information Technology, Computer Science, Engineering

Tools

SCCM

Intune

JAMF Pro

MECM

Job description

Senior Desktop Systems Administrator

We are seeking a highly motivated and technically skilled Senior 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
• Travel: Up to 10% as needed for site support, project implementation, or training
• 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: os deployment & imaging,itsm tools (servicenow, remedy, jira, etc.),active directory (user administration, permissions, group management),linux support (ubuntu, centos, rhel),desktop support / end user computing (euc),jamf administration / mac device management,windows 10/11 administration & troubleshooting,hardware troubleshooting (laptops, desktops, printers, docking stations),microsoft 365 support (outlook, teams, sharepoint, office apps),macos / apple device support