IT Systems Administrator

NAA GROUP PTY LTD; Sydney; On-site; AUD 90,000 - 130,000; Full time

Job summary

NAA Group Pty Ltd is seeking an experienced IT Systems Administrator to support and maintain our IT systems and infrastructure in Sydney. This hands-on role covers administration, maintenance, security and reliability of Microsoft, server, cloud, endpoint and network environments.

Responsibilities include daily system administration, troubleshooting, security, backups, upgrades and continuous improvement to ensure optimal performance and security for the organisation.

Qualifications

• A minimum of three (3) years of relevant professional experience in systems administration or a closely related ICT role, performing duties substantially similar to the responsibilities outlined in this advertisement.

Responsibilities

• Install, configure, administer and maintain server hardware, operating systems, software and related IT infrastructure.

Skills

System administration

Troubleshooting

Cybersecurity

Documentation

Automation

Education

Relevant IT degree

Tools

Microsoft 365

Intune

PowerShell

Microsoft Defender

Job description

Position Duration: Permanent and ongoing, with the position intended to remain available for a minimum period of three years.

About the Role

NAA Group Pty Ltd is seeking an experienced IT Systems Administrator to support and maintain our IT systems and infrastructure.

This is a hands-on technical role responsible for the administration, maintenance, security and ongoing reliability of our Microsoft, server, cloud, endpoint and network environments. The successful candidate will be involved in day-to-day systems administration, infrastructure support, troubleshooting, security, backups, system upgrades and continuous improvement.

Key Responsibilities

• Install, configure, administer and maintain server hardware, operating systems, software and related IT infrastructure.
• Administer and support Windows Server environments, including Active Directory, Group Policy, DNS, DHCP, file services and related infrastructure.
• Administer Microsoft 365 and cloud services, including Microsoft Entra ID, Exchange Online, Microsoft Teams, SharePoint Online and OneDrive.
• Manage Microsoft Intune and endpoint management, including device enrolment, configuration profiles, compliance policies, application deployment, patching and Windows Autopilot.
• Manage user accounts, groups, licences, permissions, administrative access and security policies across business systems.
• Manage identity and access controls, including Multi-Factor Authentication, Conditional Access and role-based access.
• Monitor the availability, performance, capacity, integrity and security of servers, endpoints, networks, cloud services and other business-critical systems.
• Diagnose and resolve server, operating system, hardware, software, network connectivity and user-access issues.
• Provide Level 2 and Level 3 technical support and resolve escalated technical incidents and service requests.
• Configure, administer and troubleshoot network infrastructure and services, including switches, routers, wireless access points, firewalls, VPN, TCP/IP, DNS, DHCP and LAN/WAN connectivity.
• Administer and monitor endpoint and infrastructure security solutions, including Microsoft Defender and other security platforms used by the business.
• Review system and security alerts, investigate suspicious activity, assist with incident response and implement appropriate remediation.
• Manage vulnerability remediation, system hardening, operating system updates, security patches, firmware updates and application updates.
• Conduct and monitor regular system backups, recovery procedures and restore testing to protect business information and support disaster recovery and business continuity requirements.
• Plan and implement IT infrastructure changes, upgrades and system improvements using appropriate testing, change-management and rollback procedures.
• Support cloud-hosted and virtualised infrastructure, storage, compute and related services used by the organisation.
• Develop and maintain PowerShell scripts and other automation solutions to improve system administration and operational efficiency.
• Maintain accurate technical documentation covering system configurations, network and server information, administrative procedures, changes, backup and recovery processes and troubleshooting procedures.
• Maintain ICT asset, software, licence, warranty and configuration records and assist with equipment deployment, replacement and lifecycle management.
• Support ICT infrastructure projects, system migrations, technology implementations and upgrades.
• Liaise with external ICT vendors, suppliers and service providers to resolve technical issues, procure equipment and maintain business systems.
• Provide technical advice to management regarding system performance, security, capacity, infrastructure requirements and future technology improvements.
• Ensure IT systems and administrative activities comply with applicable security, privacy, confidentiality and organisational requirements.

Skills and Experience

To be considered for this position, applicants must have:

• A minimum of three (3) years of relevant professional experience in systems administration or a closely related ICT role, performing duties substantially similar to the responsibilities outlined in this advertisement.
• Demonstrated experience administering and maintaining IT systems, servers, cloud services, endpoints and network infrastructure.
• Strong experience administering Microsoft 365 environments, including Entra ID, Exchange Online, Teams, SharePoint and OneDrive.
• Experience administering Microsoft Intune, including device management, configuration profiles, compliance policies and application deployment.
• Experience supporting Windows Server and Windows 10/11 environments.
• Good understanding of Active Directory, Group Policy, DNS and DHCP.
• Strong understanding of TCP/IP, LAN/WAN, Wi-Fi, VPN, switching, routing and firewall technologies.
• Experience with Microsoft Defender or comparable endpoint and security platforms.
• Experience managing system backups, recovery and disaster-recovery processes.
• Experience with patch management, system updates and vulnerability remediation.
• Experience with PowerShell scripting and administrative automation.
• Strong troubleshooting and problem-solving skills.
• Good understanding of cybersecurity principles, identity management, access controls and least-privilege practices.
• Strong written and verbal communication skills and the ability to maintain accurate technical documentation.
• Ability to work independently and communicate effectively with management, users, vendors and external service providers.

Qualifications

A relevant tertiary qualification in Information Technology, Computer Science, Networking, Cyber Security or a related discipline is preferred.

Relevant Microsoft, Cisco, CompTIA or other industry certifications will also be highly regarded, but not compulsory.

The Position

This is a full-time, permanent and ongoing position with NAA Group Pty Ltd.

The successful candidate will play an important role in maintaining the reliability, security and performance of the company's IT environment while supporting the continued development and improvement of its technology infrastructure.

Applicants should submit their resume outlining their relevant systems administration experience, qualifications and technical skills.