Join our Downer Professional Services team and play a key role in delivering complex defence and national security projects that safeguard Australia’s future.

Downer Professional Services comprises of three business units our Technical, Advisory, and Capability consulting practice, and Team Downer, which partners with CASG and NSSG as a major service provider to Defence. Together, we are a multi-disciplinary advisory and delivery partner of choice for clients across Defence and National Security.

We currently have an opportunity for a Cyber Security Assessor in Canberra to conduct security assessments across acquisition, sustainment and capability enhancement activities

What You’ll Do

This role offers a broad scope, with key role responsibilities including:

• Conducting security Assessment and Authorisation in accordance with the CSAAF and DCIAB CSAA.
• Developing security architecture patterns and integrating them with the broader Defence system architectures.
• Developing, reviewing, assessing and evaluating security strategies, plans, specifications, and documentation that support the acquisition and sustainment of capability to meet Defence’s needs (including liaison with security assessment and authorisation authorities).
• Developing (in collaboration with engineering) the security elements of overall system architecture and engineering plans, specifications and documentation that supports the acquisition and sustainment of capability to meet Defence’s needs.
• Conducting security capabilities requirement analysis relevant to the acquisition of capability in a complex Defence environment (including support to technical certification, and security assessment and authorisation processes).
• Developing requirements and performance targets for the cyber security test and evaluation plans.

What You’ll Bring

• Experience working with Military in Cyber Security, assessing systems against DCSAAF and ISM/DSPF/PSPF.
• Understanding of the Australian Government Information Security Manual (ISM).
• Comprehensive understanding of Defence Security Policy Framework and security control requirements.
• Comprehensive understanding of the Defence Cyber Security Assessment and Authorisation Framework (CSAAF).
• Strong knowledge and understanding of the Once Defence Capability System (formally the Capability Life Cycle)
• ISC2 – Certified Information System Security Professional (CISSP) or equivalent category A Security leadership qualification.
• Sherwood Applied Business Security Architect (SABSA) Foundation Certificate or SABSA Practitioner certificate or equivalent Enterprise Security Architecture qualification.
• ISACA – Certified Information Systems Auditor (CISA) or equivalent Category B System Auditing Certification.

This role requires the successful incumbent to have already been endorsed by DCIAB as an assessor.

Due to the nature of the work, you are required to currently hold and maintain an AGSVA Security clearance as required by the Commonwealth. In some instances, compliance with International Traffic in Arms Regulations (ITAR) requirements may also be an inherent requirement.

More than anything, you’ll bring a strong work ethic, a positive attitude, and a commitment to delivering high-quality outcomes for our clients.

Why Downer Professional Services

At Downer Professional Services, we’re not just a workplace - we’re a business dedicated to contributing to the shaping of the future of defence in Australia. As the country’s only sovereign prime, we’re committed to making a real difference in protecting Australia’s interests.

What is means to belong at Downer Professional Services

• Meaningful work: Help to deliver critical Defence projects that protect Australia and shape its future.
• Professional development: Access career mapping, accelerated learning programs, and shared learning through our Communities of Practice.
• Great perks: Enjoy discounts on healthcare, retail, vehicles, and more through Perks@Downer.
• Veteran support: Benefit from initiatives like up to 20 days of Reservist Leave to stay connected post-service.

You want your work to matter and so do we. With over 26,000 people across Australia, New Zealand and the Pacific, our team is made up of individuals with unique perspectives, backgrounds, and ideas.

We know that diversity makes us stronger and we actively celebrate it through our commitment to inclusion and belonging.

We’re committed to building a team that reflects the diverse communities we serve and we welcome people of all ages, genders, sexual orientations, cultures, abilities, and lived experiences. We especially encourage applications from those whose voices have traditionally been underrepresented in our industry, including women, Aboriginal and Torres Strait Islander Peoples, Māori and Pasifika Peoples, veterans, people with disability, and neurodivergent individuals. Even if your experience doesn’t align perfectly with this role, we’d still like to hear from you. If it feels like the right fit, apply - potential counts, and so do you.

As a WORK180 Endorsed Employer, we support flexibility that works for your life, inclusive leadership that values your voice, and equitable access to opportunity so you can do your best work and bring your whole self to it.

If you need support or adjustments through the recruitment process, just let us know, we’re here to help you put your best foot forward.