Product Security Engineer

Secure Australia's Next-Generation Defence Technology

Silentium Defence is pioneering the future of passive radar and space domain awareness technologies protecting people, assets, and critical systems through innovation that matters.

As our Product Security Engineer, you'll play a key role in ensuring the resilience, integrity, and compliance of our engineering systems and infrastructure. This is a newly created position that will build and embed product security capability across the business. You'll be part of a multidisciplinary team shaping how Silentium Defence designs, tests, and protects the next generation of sovereign sensing technologies trusted by Defence and critical infrastructure partners.

About the Role

Reporting to the Engineering Security & Infrastructure Lead, you will:

• Integrate security principles, controls, and testing across all stages of the product development lifecycle (SDLC).
• Conduct threat modelling, vulnerability assessments, and secure code reviews.
• Implement and manage security automation within CI/CD pipelines (SAST/DAST).
• Ensure compliance with the Defence Security Principles Framework (DSPF), DISP, and Australian Government Information Security Manual (ISM).
• Develop and maintain security documentation — risk assessments, security policies, and system security plans (SSP) — supporting audit readiness and GRC frameworks.
• Support incident response and vulnerability remediation activities.
• Stay ahead of emerging cyber threats and technology trends affecting the Defence and critical infrastructure sectors.

What You'll Bring

Essential Qualifications & Experience

• Bachelor's degree in Cybersecurity, Computer Science, or Engineering (or equivalent).
• 5+ years' cybersecurity experience, with at least 2 years in hands-on security engineering.
• Proven ability to embed security across the software and product lifecycle.
• Working knowledge of ISM, DSPF, DISP, and NIST SP frameworks.
• Minimum certification: CompTIA Security+.

Highly Regarded

• Advanced certifications such as CISSP, ISSEP, OSCP, or CISM.
• Defence, aerospace, or critical infrastructure industry experience.
• Demonstrated capability in GRC tooling, audit preparation, and supplier assurance (SBOM review).
• Familiarity with secure coding in Python, Bash, or C++.
• Linux system security and hardening (AppArmor, auditd, fapolicyd, systemd).
• Experience developing or integrating DevSecOps pipelines and using security automation tools.

Why Silentium Defence?

• Greenfield opportunity to design and contribute to Product Security.
• Collaborate with Australia's brightest engineers developing world-first radar technology.
• Flat structure and direct collaboration with executive leadership.
• Agile and hands-on environment — where your impact is tangible.

Application Eligibility:

Due to the nature of our work within the Defence industry, applicants must be Australian Citizens and eligible to obtain and maintain a (NV1) level security clearance, only applicants who meet these mandatory requirements will be considered.

How to Apply:

Click "Apply Now" to submit your CV and cover letter outlining your suitability for this opportunity.

(please note applications submitted to us via email will not be progressed further for consideration)

Applications close: 5:00pm Wednesday 3rd December 2025

For a confidential discussion, please contact: People & Culture by emailing:

Silentium Defence is an equal-opportunity employer that values diversity of thought, background, and experience. We foster a respectful and collaborative workplace where every team member is encouraged to contribute to our shared mission. Due to the nature of our work, applicants must be Australian citizens and eligible to obtain and maintain a Defence security clearance.

Recruitment Agency Disclaimer: Silentium Defence does not accept unsolicited resumes or candidate referrals, and we will not be responsible for any fees associated with unsolicited submissions.