Senior ICT Security Engineer

About the Client
Our client is a high-profile Australian Government national security agency responsible for protecting Australia from global threats and advancing the nation’s strategic interests. Operating across cyber security, intelligence and highly secure technology environments, the organisation delivers critical capabilities that support Australia’s national security.
 
This is an opportunity to contribute to complex, mission-critical ICT programs within a highly collaborative and security-focused environment.
About the Role
Our client is seeking an experienced Senior ICT Security Engineer to support the delivery, accreditation and ongoing sustainment of mission-critical ICT capabilities.
 
You will lead security engineering activities across complex ICT systems, ensuring security requirements and controls are embedded throughout the system lifecycle. A key focus of the position will be achieving and maintaining Authority to Operate (ATO) approvals through the development of security documentation, risk assessments and accreditation artefacts.
Key responsibilities will include:

• Managing and developing ICT system security activities
• Leading activities required to achieve and maintain ATO approvals
• Developing Concepts of Operations and System Security Plans
• Conducting security risk assessments, threat assessments and compliance reviews
• Preparing executive briefs, technical documentation and security recommendations
• Reviewing information systems for actual or potential security-control issues
• Negotiating with ICT engineers, architects and security specialists to achieve accreditation outcomes
• Communicating complex technical and security information to technical and non-technical audiences

The Successful Candidate
The ideal candidate will be an accomplished ICT security professional with demonstrated experience leading the implementation and ongoing compliance of security controls within complex technology environments.
You will bring:

• Strong experience developing and maintaining ATO documentation, System Security Plans and supporting accreditation artefacts
• Demonstrated capability in security risk assessments, threat assessments and compliance reviews
• A proven ability to work with engineers, architects and cyber security stakeholders to resolve issues and secure accreditation outcomes
• Excellent technical writing skills, including experience preparing executive briefs and recommendations for senior stakeholders
• Strong communication, stakeholder engagement and problem-solving capabilities
• The ability to operate effectively within multidisciplinary and highly regulated environments

Formal security qualifications such as CISSP, CISM, CCSP or SABSA will be highly regarded, along with IRAP Assessor Training or equivalent accreditation experience. Previous experience supporting Defence, national security, secure infrastructure, cloud environments or system-integration projects would also be advantageous.
Candidates must also be willing to undergo an Organisational Suitability Assessment (OSA) prior to engagement.
Why partner with Whizdom?
We’re Whizdom. We view you as an extension of our strong, dependable brand and have differentiators which really are different! The Whizdom way:

• We pay our contractors same day you submit your timesheet!
• We are Level 3, DISP certified and have signed the Veteran Employment Commitment and been awarded the highest level of compliance to this important initiative, proactively assisting veterans transitioning from the forces to civilian roles. We’ve been lucky enough to win industry awards for our high level of process compliance and are ISO 9001 certified. Our commitment to reducing Greenhouse Gas Emissions has been accredited in line with large global organisations.
• We value diversity and welcome applications from Indigenous Australians, people from diverse cultural and linguistic backgrounds and people living with a disability.

 
Location: The role is based in Canberra ACT.
Contract terms: 12 months from commencement date, plus 2x 12 month extensions
Experience Level: APS6 Equivalent
Security Requirements: Candidates must hold an active or reactivatable Top Secret Positive Vetting (TSPV) Security Clearance on submission. Our client is not prepared to upgrade an existing clearance for this position. An OSA (Organisational Suitability Assessment) will be required for this position.
How to Apply: Please upload your resume to apply. Please note you will need to complete selection criteria to complete this application process. We will be in touch with instructions for suitably skilled candidates.
 
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.
 
Applications open until  8am 26 October 2026.
Reach Damien on 0480 002 503 or damienm@whizdom.com.au for any further information.