ICT Systems and Applications Administrator Cleared Recruitment is proud to be working with the Commonwealth supporting the delivery, maintenance, and enhancement of critical ICT platforms within a secure defence environment based in Canberra. This is a 12-month contract with likely extensions! We are seeking NV2 & TSPV-cleared Systems Administrators with expertise across Windows environments, security information management applications (SIEM), virtualisation, data transport, and enterprise-level system sustainment . This opportunity sits within a critical ICT capability uplift, offering long-term career potential for individuals with a technical edge and strong understanding of Defence ICT requirements. Key Responsibilities: You will be part of a specialist team providing technical platform support across a wide spectrum of defence-grade ICT systems and infrastructure. Core responsibilities include: Sustainment and enhancement of SIEM platforms (e.g., Elastic, Stroom, ArcSight). Containerised application support using Rancher Kubernetes Engine or OpenShift. Data pipeline management (NiFi, Kafka) and data integrity enforcement. Host log collection development (Visual Studio, .NET, C#, SQL integrations). Managing indexing and reindexing activities across large datasets in Elastic. Nuix application support (Workstation, Investigate) with Elasticsearch integrations. Infrastructure support across VMware, NetApp, and network configuration environments. Application deployment using MECM, Ivanti, and whitelisting tools. SOE creation and sustainment (Windows 11/2022 Server) and VDI administration via VMware Horizon. Multi-factor authentication integration (RSA, PKI, certificate-based access). MSSQL database administration and maintenance. Backup/restore operations using Commvault. System patching and vulnerability scanning using Tenable Security Center. Support to system users and analysts, documentation of system design, and technical knowledge transfer to APS teams. Continuous system monitoring, incident resolution, and proactive maintenance. Ideal Candidate Profile: Minimum of 5 years' experience in system administration and enterprise infrastructure support. In-depth knowledge of Windows Server , virtualisation (VMware) , security logging , and SIEM ecosystems . Strong scripting/development experience (PowerShell, XSLT, .NET). Experience with multi-domain system support and cross-platform integration. Background in ICT systems hardening , patch management, and secure application delivery. Strong understanding of Defence ICT standards , practices, and stakeholder environments. Requirements: NV2 & TSPV clearance (mandatory) - no exceptions. Must be an Australian Citizen . Strong written and verbal communication skills. Ability to contribute to technical documentation , design processes, and project reviews. Collaborative and proactive mindset with excellent stakeholder engagement capabilities. What's on Offer: Work on a mission-critical Defence capability uplift . Be part of a multidisciplinary ICT team in a high-security setting. Long-term contract opportunity with scope for extension . Access to complex, real-world technology platforms at the forefront of national security. Competitive daily rates based on experience and role complexity. To Apply or Learn More: Contact Daniel Crowe 0424 906 007 clearedict.com.au/jobs Referral Bonus: Know someone TSPV-cleared? Refer them and earn up to $1,000 in gift cards if successfully placed. At Cleared Recruitment, we connect Australia's top security-cleared professionals with high-impact roles in Defence, Intelligence, and National Security .