Senior System Administrator

UpperGround by Hudson; Brisbane; On-site; AUD 83,000 - 124,000; Full time

Job summary

UpperGround by Hudson is seeking an experienced Senior Microsoft 365 Support Engineer to provide advanced operational support across an enterprise Microsoft 365 environment in Brisbane. The role is hands-on, focusing on troubleshooting complex issues, incident management and reliable day-to-day delivery of Modern Workplace services.

You will collaborate with support teams and specialists to maintain a secure, stable environment while contributing to continuous service improvement.

Qualifications

• Hands-on experience administering Microsoft 365 in an enterprise environment.
• Experience with Entra ID, authentication, MFA, licensing and Conditional Access troubleshooting.
• Experience supporting Exchange Online, Teams, SharePoint Online and OneDrive.

Responsibilities

• Provide advanced troubleshooting and resolution of Microsoft 365 incidents and service requests.
• Administer Microsoft Entra ID including user and group management, licensing and guest access.
• Support Exchange Online, including mail flow and Outlook connectivity.
• Troubleshoot Teams, SharePoint Online and OneDrive issues relating to collaboration and site administration.
• Support security and compliance controls within established policies.
• Investigate incidents and changes using ITSM tooling.
• Use PowerShell and Microsoft Graph for administration and reporting.
• Maintain technical documentation and handover information.
• Communicate with customers and manage expectations throughout the process.

Skills

Microsoft 365 administration

Troubleshooting

PowerShell

ITIL processes

Incident management

Communication skills

Tools

Microsoft Entra ID

Exchange Online

Teams

SharePoint Online

OneDrive

Power BI

Power Platform

Job description

We are seeking an experienced Senior Microsoft 365 Support Engineer to provide advanced operational support and administration across an enterprise Microsoft 365 environment.

This is a hands-on role suited to someone who enjoys troubleshooting complex technical issues, managing incidents through to resolution and ensuring reliable day-to-day delivery of Modern Workplace services.

Working collaboratively with support teams and technical specialists, you will help maintain a secure, stable and effective Microsoft 365 environment while contributing to continuous service improvement.

Key Responsibilities

• Provide advanced troubleshooting and resolution of Microsoft 365 incidents and service requests, taking ownership through to closure or appropriate escalation.
• Administer Microsoft Entra ID, including user and group management, authentication, MFA, access permissions, licensing and guest access.
• Support Exchange Online, including mail flow, shared mailboxes, distribution groups, permissions and Outlook connectivity.
• Troubleshoot Microsoft Teams, SharePoint Online and OneDrive issues relating to collaboration, access, file sharing, synchronisation and site administration.
• Support Microsoft 365 security and compliance controls, including Conditional Access, Microsoft Defender and Microsoft Purview, working within established security policies.
• Assist with Intune, mobile device management, mobile application management and Microsoft 365 Apps connectivity.
• Provide operational administration and support for Power BI and Power Platform environments, including licences, permissions and basic configuration.
• Investigate and manage incidents, service requests, changes and problem records through an enterprise ITSM platform.
• Use PowerShell and Microsoft Graph to support investigations, reporting and routine administration.
• Maintain accurate technical documentation, knowledge articles, known errors and handover information.
• Collaborate with support teams and technical specialists to resolve issues, improve service delivery and support the transition of services into business-as-usual operations.
• Communicate clearly with customers, provide practical technical advice and manage expectations throughout the support process.

Occasional out-of-hours work, on-call participation and planned changes may be required.

About You

You are a technically capable and customer-focused Microsoft 365 professional who can work independently, investigate complex problems and deliver reliable operational outcomes.

You will bring a proactive approach to troubleshooting, strong communication skills and the ability to work effectively across technical teams in a structured enterprise environment.

Essential Skills and Experience

• Demonstrated hands-on experience administering and supporting Microsoft 365 in an enterprise or managed services environment.
• Strong working knowledge of Microsoft Entra ID, user and group administration, authentication, MFA, licensing and Conditional Access troubleshooting.
• Experience supporting Exchange Online, including mailboxes, mail flow, permissions, distribution groups and Outlook issues.
• Practical experience administering and troubleshooting Microsoft Teams, SharePoint Online and OneDrive.
• Knowledge of endpoint management, MDM/MAM and Microsoft 365 Apps connectivity.
• Experience supporting Microsoft 365 security and compliance capabilities, including Defender and Purview, within established security controls.
• Understanding of ITIL-aligned incident, service request, problem and change management processes.
• Experience using ServiceNow or a comparable enterprise ITSM platform.
• Familiarity with PowerShell and Microsoft Graph for operational administration and troubleshooting.
• Strong analytical and problem-solving skills, with the ability to manage competing priorities and see issues through to resolution.
• Excellent written and verbal communication skills, including the ability to explain technical issues to non-technical stakeholders.
• A commitment to following security, privacy, access management and change control requirements.

Desirable Experience

• Microsoft certifications in Microsoft 365 Administration, Teams, Endpoint Management, Identity or Security.
• Experience supporting multiple customers within a managed services environment.
• Familiarity with Queensland Government IT security, service management and operational requirements.
• Exposure to Power BI and Power Platform administration, including environments, permissions, licensing and data loss prevention awareness.
• Familiarity with Microsoft 365 Copilot support and operational readiness.
• Experience supporting service handovers, knowledge transfer and continuous improvement initiatives

If you have strong Microsoft 365 administration and troubleshooting experience and are looking for your next contract opportunity in Brisbane, we'd love to hear from you.

Diversity, Equity & Inclusion at Hudson

Hudson is committed to helping you find a workplace where you feel respected, supported, and free to thrive. We welcome applications from all backgrounds, identities, and lived experiences—because when different voices come together, amazing things happen.

Casual Loading

Please note for all Australian based contract and temporary roles only, the pay rate is inclusiveofmandatory 25% casual loading. This excludes permanent and fixed term roles.

Due to current Victorian labour hire licence restrictions, Hudson is not advertising, offering or accepting applications for contract, temporary or labour hire roles that are based in Victoria or otherwise connected to Victoria. This includes contract, temporary or labour hire roles where the candidate resides in Victoria, even if the role is based in another state. These restrictions do not apply to permanent or fixed term employment opportunities.