Maintain and monitor IT infrastructure including servers, workstations, network devices, firewalls, storage, printers, and access points.Support different infrastructure models, including Domain Active Directory environments and Workgroup environments.Maintain proper IT documentation for each company, including network diagrams, server details, device inventory, user accounts, licenses, backup plans, and support history.Manage and support firewalls, including Sophos and FortiGate Firewalls, review rules, user access, and basic security setting.Manage and troubleshoot TP-Link access points and controller-based wireless environments.Coordinate with internet service providers and external vendors when needed.Manage Windows Server environments.Administer Active Directory, including users, groups, organizational units, permissions, and Group Policies.Support DNS, DHCP, file sharing, print services, and basic server roles.Manage access permissions for shared folders and company resources.Monitor server health, storage usage, event logs, and system performance.Support companies that operate without a domain and are currently using workgroup-based setups.Manage and monitor backup solutions.Ensure daily, weekly, and monthly backups are running successfully.Perform regular backup checks and test restore activities.Maintain backup documentation, retention policies, and recovery procedures.Report backup failures, storage issues, and risks to management.Provide technical support to end users across the group.Troubleshoot Windows 10 and Windows 11 issues.Administer Microsoft 365 users, licenses, mailboxes, groups, and basic security settings.Support Microsoft Office and Microsoft 365 applications, including Outlook, Word, Excel, PowerPoint, Teams, OneDrive, and SharePoint.Handle user account setup, password resets, email configuration, and access requests.Install, configure, format, and maintain laptops, desktops, and user devices.Diagnose and resolve hardware, software, printer, scanner, and connectivity problems.Support basic mobile device email setup and Microsoft 365 access.Support antivirus, endpoint protection, and approved company applications.Install, configure, and troubleshoot network and local printers.Maintain an updated inventory of IT assets across all companies.Provide remote and onsite support when required.Coordinate with IT vendors, internet providers, firewall providers, Microsoft partners, printer suppliers, and hardware maintenance companies.Follow up on warranty claims, repairs, renewals, licenses, and service contracts.RequirementsBachelor’s degree in Computer Science, Information Technology, Information Systems, Engineering, or a related field. 3–5 years of hands-on experience in IT infrastructure administration and end-user technical support.Experience supporting multiple sites, branches, or companies is highly preferred.Strong practical experience with Windows Server, Windows 10/11, Microsoft Office, and Microsoft 365.Good experience with Active Directory, DNS, DHCP, Group Policy, file sharing, and permissions.Experience with firewalls, preferably FortiGate