Role Seniority - mid level, senior

More about the Information Technology Security Specialist role at Downer Professional Services

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 an ICT Security Specialist in Canberra to work on Joint projects.

What You’ll Do

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

Expertise in cyber security assessment and authorisation, with the ability to develop, deliver and maintain Defence‑compliant security documentation and assurance artefacts. Strong collaboration skills, working closely with Cyber Security Assessors, Product Managers and System Managers across all stages of the CSAA lifecycle. Ability to produce high‑quality security artefacts, including Security Risk Management Plans, System Security Plans, System Security Overviews and Incident Response Plans. Deep understanding of Defence security requirements, ensuring CAF16 systems remain compliant throughout their operational life. Capacity to provide authoritative cyber security advice, undertaking complex assurance tasks and supporting stakeholders with clear, accurate and technically sound guidance.

What You’ll Bring

Strong security assurance expertise, including the ability to deliver advisory services, produce high‑quality assessment and authorisation documentation, and interpret complex Defence security requirements. Excellent communication and stakeholder engagement, enabling effective collaboration across ICT programs, engineering teams, security stakeholders and broader project groups while mentoring others and supporting team capability uplift. Proven analytical, technical and solution‑focused capability, with experience in threat modelling, developing compliant security solutions, and integrating security requirements across system lifecycles within Defence or similar complex environments. Strong cybersecurity experience in a Defence (ideally CASG) environment Experience in developing security artefacts, including System Security Plans (SSPs) and Security Risk Management Plans

Due to the nature of the work, you are required to currently hold and maintain a minimum Negative Vetting 1 or higher 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.

Before we jump into the responsibilities of the role. No matter what you come in knowing, you’ll be learning new things all the time and the Downer Professional Services team will be there to support your growth.

Please consider applying even if you don't meet 100% of what’s outlined

Key Responsibilities

• Delivering security documentation
• Collaborating with stakeholders
• Providing cyber security advice

Key Strengths

• Cyber security assessment and authorisation
• Collaboration skills
• Security artefact production
• Analytical and technical capability
• Stakeholder engagement
• Threat modelling experience

A Final Note: This is a role with Downer Professional Services not with Hatch.