Security Document Writer

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.

Downer Professional Services is seeking an experienced Security Documentation Writer to support one of our major projects with security accreditation and certification activities across Defence ICT systems and solutions.

In this role, you’ll work closely with Certification Consultants, System Managers and ICT teams to develop the security documentation required to support system certification and accreditation. You’ll contribute to complex Defence capability by translating technical security requirements, risks and controls into clear, accurate documentation aligned with Australian Government security standards.

What You’ll Do

As part of the security team, you’ll support ICT programs and projects by providing security assurance, identifying information security risks and helping ensure systems meet relevant Australian Government security requirements.

• Develop and maintain key security assurance documentation, including Security Risk Management Plans, System Security Plans, System Overviews and Incident Response Plans.
• Support systems through certification and accreditation activities.
• Review security documentation, policies and controls to identify risks and vulnerabilities, providing security advice to ICT programs and projects.
• Work with internal delivery and security teams to assess security measures and identify and analyse system security requirements.
• Support CASG in managing information security risks and ensuring alignment with the ASD Information Security Manual (ISM) and Protective Security Policy Framework (PSPF)

What You’ll Bring

• Strong experience in cyber security, information security and risk management.
• Demonstrated experience developing security assurance and accreditation documentation.
• Confidence interpreting technical security requirements and assessing vulnerabilities and risks across complex ICT environments.
• Relevant industry-standard qualifications, with experience in Defence systems, modern networking, operating systems, project management, or Defence certification and accreditation environments highly regarded.
• Experience with CASG, Defence ICT programs or Australian Government cyber security frameworks will be highly valued.

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 allages, 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.