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Senior System Administrator

KinexusSydney, Sydney🇦🇺AustraliaPosted 10 Sept 2026

Quick Overview

Seniority
Mid Senior
Employment type
Full Time
Work mode
Hybrid
Location
Sydney, Sydney, Australia
OracleSQLBambooConfluenceGitJiraPostgreSQLVMware

Job Description

Senior System Administrator - Defence Prime Business

Permanent position

Sydney based position

Active NV1 or NV2 required - applicants without this cannot be considered

Kinexus is a specialist defence and national security recruitment agency with over 25 years of working and specialising in the industry. We have partnered with a large defence prime business to search for a Senior System Administrator who can lead the build and management of internal business systems and bespoke defence ICT technologies.

We're looking for someone who is able to build, configure and manage physical and virtual server environments, manage cloud platform, and manage bespoke defence applications. This digital and physical ICT environment supports the delivery of critical services and products to the ADF, making it critical to maintain high security and uptime of these systems.

In this role you will:
  • Support the implementation, technical support and administration of local infrastructure (network/servers/storage/databases/applications/backups), and assist with scoping and implementing solutions
  • Manage vendors, contracts, and internal stakeholder relationships to ensure required service levels are maintained, while owning issues and solutions through to completion
  • Ensure infrastructure and application controls follow defence security policies and requirements, producing and reviewing compliance reports on a regular basis
  • Manage the budget and track costs of digital technology services, hardware and software, while driving continuous improvement of systems and services
  • Manage and support ICT systems upgrade and implementation projects
What's needed from you:
  • Minimum of NV1 security clearance is required for this role at the point of application, candidates without this cannot be considered.
  • Bachelor's degree (or equivalent experience) in Computer Science, ICT, Management Information Systems, or a related field, with 10 years of IT-related experience including at least 3 years in a lead role
  • Proven technical experience across Dell and VMware-based servers, LAN infrastructure, cloud platforms, Windows and Linux servers, high availability/clustered environments, and applications such as SharePoint
  • Experience with the Atlassian toolchain (Jira, Bitbucket/Git, Bamboo, Confluence), multi-platform software development and build systems, product lifecycle management systems such as Windchill, and database administration (MS SQL, PostgreSQL, Oracle, etc.)
  • Strong leadership, project management, and analytical/problem-solving skills, coupled with excellent communication and interpersonal abilities, and the flexibility to work autonomously across a variety of tasks, priorities

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