Systems Administrator

About the Role As a Systems Administrator, you will be responsible for the day-to-day management, monitoring, patching, security, and compliance of property-based server infrastructure and on-site technology platforms across a large, distributed environment. You will manage virtualised workloads, server infrastructure, CCTV systems, endpoint security, backups, and related platforms, working autonomously while collaborating with Australian-based technology teams when escalation or physical intervention is required. The role is focused on maintaining high availability, security, standardisation, and operational reliability across the infrastructure estate. About the Client You will be working with a leading property technology and services organisation that supports a diverse national portfolio spanning residential, student accommodation, seniors living, and build-to-rent communities. The organisation operates a large-scale technology environment across more than 130 properties, supporting tens of thousands of beds and dwellings. Its infrastructure includes virtualised server environments, CCTV platforms, endpoint security, backup systems, and other critical property technology services. Ideal Profile Essential Experience Proven experience as a Systems Administrator or in a comparable infrastructure role. Strong hands-on experience with virtualisation platforms, with Proxmox highly preferred. Solid administration experience across Windows Server and Linux, including patching and security hardening. Experience with RMM platforms such as NinjaOne or equivalent. Experience monitoring backup platforms and conducting documented test restores. Strong understanding of server hardware, storage, and firmware lifecycle management. Excellent troubleshooting and root-cause analysis skills. Strong written English and the ability to communicate clearly with Australian-based stakeholders. Desirable Experience Experience with CCTV or VMS platforms, particularly NX Witness. Experience managing distributed infrastructure across multiple sites or geographic locations. Familiarity with Dell server firmware and iDRAC management. Basic scripting or automation skills using Bash, PowerShell, or similar. Experience with SentinelOne or comparable enterprise endpoint security platforms. Personal Attributes Highly organised, process-driven, and disciplined in maintaining documentation and operational standards. Proactive and detail-oriented, with the ability to identify potential infrastructure issues before they become service-impacting incidents. Comfortable working remotely and autonomously, with strong ownership and accountability. A clear written communicator who provides complete and actionable escalations and updates. Customer-focused, particularly when supporting service desk requests. Collaborative and low-ego, with respect for scope boundaries and cross-functional teams. Responsibilities Virtualisation & Hypervisor Management Manage, monitor, maintain, patch, and securely configure Proxmox hypervisors across geographically distributed sites. Perform controlled Proxmox upgrades and version updates in line with internal standards and testing procedures. Manage applicable Dell server firmware and iDRAC updates. Monitor CPU, memory, storage, cluster health, and physical server performance, proactively addressing issues and alerts. Virtual Machine Management Administer Windows Server and Linux virtual machines running across the Proxmox environment. Apply patching, security baselines, configuration standards, and performance monitoring. Use NinjaOne RMM for remote administration, monitoring, patching, and configuration management. Identify and remediate configuration drift, performance degradation, and capacity risks. Backup Monitoring & Recovery Manage the operational monitoring of backup and disaster recovery platforms across infrastructure workloads. Investigate backup failures and ensure issues are resolved promptly. Conduct regular backup verification and documented test restores to validate recoverability. Escalate recurring or systemic backup issues with clear technical documentation. CCTV & Video Management Manage Linux-based CCTV servers and the NX Witness VMS environment across the property portfolio. Monitor operating system health, disk health, storage utilisation, RAID, SMART alerts, and hardware status. Perform controlled Linux, firmware, and NX Witness updates. Monitor camera connectivity, recording performance, storage capacity, and retention risks. Escalate incidents requiring physical intervention with clear information for onsite support. Endpoint Security Manage SentinelOne Complete across all in-scope property-based systems. Ensure endpoints remain onboarded, online, protected, and correctly configured. Investigate security alerts and suspicious activity, escalating incidents in accordance with established procedures. Identify and resolve gaps in endpoint protection and reporting. Service Desk Support Provide service desk coverage when required, supporting resident-facing Wi-Fi, IPTV, and in-scope technology requests. Acknowledge, triage, resolve, and appropriately escalate tickets. Maintain clear, professional, and accurate communication with residents and operational stakeholders. Ensure tickets contain sufficient documentation to support efficient resolution and escalation. Monitoring, Documentation & Continuous Improvement Proactively monitor infrastructure for performance degradation, capacity constraints, and security vulnerabilities. Maintain accurate documentation covering system standards, patch schedules, known issues, and remediation procedures. Identify opportunities to improve reliability, automation, and operational efficiency. Provide consistent reporting on patch compliance, backup health, CCTV status, and security posture. How we take care of our team 💰 Get paid in Australian Dollars 🏥 Medical insurance from day one for you + spouse (or parents if unmarried) 🩺 Generous OPD coverage from doctor visits to all your medical needs 🏡 Home office setup allowance to build your ideal workspace 🌐 Internet allowance to keep you connected 💪 Gym & wellness allowance to stay fit and balanced 🎉 Work hard, play hard – regular team events & engagement activities 🧠 Diji Assist – Mental health & counseling support when you need it 📚 We invest in you – reimbursement for industry certifications 🗣️ Open-door culture – your ideas and feedback always matter 🌍 Flexible work – home or office, wherever you do your best work 🏆 Rewards & recognition that actually recognize you 🥳 Great christmas & financial year-end parties to unwind with your loved ones