Senior System Engineer

Seeking a Senior System Engineer with vast experience in Linux infrastructure migrations and ongoing system maintenance.

Job details

The System Engineer is responsible for the administration, maintenance, and improvement of enterprise infrastructure services, with a strong focus on certificate management, Linux systems, security controls, and infrastructure migrations. The role supports secure and reliable system operations across multiple environments and contributes to continuous improvement through project delivery and operational enhancements.

Key Deliverables, Outputs and Outcomes

• Certificate Authority and Certificate Management
  • Manage and maintain enterprise certificate services,
  • Administer external certificates using DigiCert and manage an internal Windows Server Local Certificate Authority environment comprising multiple CAs.
  • Lead certificate authority migrations, including the build and implementation of new CA infrastructure.
• Linux Systems Administration
  • Provide operational support for Linux environments
  • Perform Linux infrastructure migrations and ongoing system maintenance.
  • Develop and maintain Linux Standard Operating Environments (SOEs), including the build and migration of an Essential Eight-aligned RHEL image.
  • Apply scripting capabilities, including BASH, to support automation and system management.
• Security and Monitoring
  • Maintain security controls, including the deployment and updating of antivirus solutions in high-side environments.
  • Implement and enhance system monitoring capabilities.
  • Conduct regular system health checks and daily operational monitoring activities.
• Projects, Migrations, and Upgrades
  • Contribute to and lead project-based work, including application and infrastructure migrations.
  • Support system and application upgrades to improve security, performance, and reliability.
  • Collaborate with stakeholders to ensure successful delivery of migration and upgrade activities.

Essential criteria

• IT infrastructure: Level 4 (SFIA)

Provides technical expertise to enable the correct application of operational procedures. Contributes to the planning and implementation of infrastructure maintenance and updates. Implements agreed infrastructure changes and maintenance routines. Uses infrastructure management tools to determine load and performance statistics. Configures tools and/or creates scripts to automate the provisioning, testing and deployment of new and changed infrastructure. Maintains operational procedures and checks that they are executed following agreed standards. Investigates and enables the resolution of operational issues. Provides reports and proposals for improvement, to specialists, users and managers.

• Systems installation and removal: Level 5 (SFIA)

Takes responsibility for installation and/or decommissioning projects. Provides effective team leadership, including information flow to and from the customer during project work. Develops and implements quality plans and method statements. Monitors the effectiveness of installations and ensures that appropriate recommendations for change are made.

Contract:  12 Months Contract  with 2 x 12 month extensions 

Security Required: NV1 Security Clearance required 

Location  - Canberra   Hybrid - 3 days a week in the office

How to Apply - Please upload your resume to apply. Candidates will need to be willing to undergo pre-employment screening checks which may include, ID and work rights, security clearance verification and any other client requested checks

Closing date: Thursday 4 June 2026  by 9am 

Call Joanne Finchett on 0480 002454 or email Joanne@whizdom.com.au for any further information