Senior Desktop Systems Administrator – On-site IT Support

About the role

We are looking for a highly motivated Senior Desktop Systems Administrator to provide on‑site L2 support for a large‑scale enterprise environment. The role involves managing client compute devices, operating systems, mobile platforms and related technologies across multiple locations.

Key responsibilities

• Provide expert‑level support for laptops, desktops, peripherals and accessories.
• Deploy, configure and troubleshoot Windows, macOS and Linux (Ubuntu, CentOS, RHEL) operating systems.
• Manage Active Directory, Group Policy Objects and JAMF Pro configuration profiles.
• Administer network services including WAN/LAN, TCP/IP, DHCP, DNS and VPN.
• Support Microsoft 365 suite – Teams, SharePoint, Exchange/Outlook and Office applications.
• Configure and manage mobile devices (iOS, Android) via MDM solutions.
• Maintain video‑conferencing and conference‑room control systems, preferably Cisco.
• Oversee enterprise printing infrastructure and high‑volume scanning solutions.
• Participate in IT security incident response, malware remediation and forensic support.
• Plan and execute user/site relocations, office moves and site migrations.
• Collaborate with security teams to enforce endpoint compliance, patch management and device hardening.

Required profile

• Strong technical expertise with a focus on end‑user computing.
• Excellent problem‑solving abilities and capacity to work independently.
• Experience in a fast‑paced, large‑scale enterprise IT environment.
• Ability to collaborate with cross‑functional IT teams.

Required skills

• Windows operating system administration
• macOS deployment and management
• Linux (Ubuntu, CentOS, RHEL) administration
• Active Directory and Group Policy (GPO)
• JAMF Pro
• Microsoft 365 / Office 365
• Exchange Online
• Mobile Device Management (MDM) solutions
• Cisco collaboration and video‑conferencing systems
• TCP/IP, DHCP, DNS, VPN
• IT Asset Management (ITAM)
• IT Service Desk and incident response