Principal Systems & Cyber Security Specialist

Date Posted: 2026-09-30 Country: Australia Location: AU-SA-MAWSON LAKES-111 1-11 Technology Dr BLDG 111 Position Role Type: Unspecified Fast paced dynamic work environment Great benefits and career opportunities Multiple location options available, including Brisbane, Adelaide and Sydney. Your mission starts here at Raytheon Australia! We are seeking an experienced Principal Systems & Cyber Security Specialist to join our growing team and play a key role in shaping the cyber security posture of some of Australia's most important Defence capabilities. In this highly visible role, you will provide expert systems and cyber security leadership across a diverse portfolio of Defence programs, supporting security outcomes throughout the capability lifecycle. Working closely with engineering teams, program leadership and Defence stakeholders, you will help ensure complex systems are secure, resilient and compliant with Defence security requirements. You will leverage your deep understanding of both systems engineering and cyber security principles to translate complex technical requirements into the artefacts, evidence and assurance activities required to achieve and maintain Defence security authorisation. The role will require regular travel and direct engagement with Defence stakeholders and customers.

Key Responsibilities

• Act as a trusted cyber security advisor to internal program teams and Defence stakeholders.
• Influence system and solution design activities to achieve secure-by-design and cyber-resilient outcomes.
• Lead and support Cyber Security Assessment and Authorisation (CSAA) activities across assigned Defence programs.
• Partner with systems engineering and project delivery teams to integrate security requirements throughout the capability lifecycle.
• Develop and maintain security documentation and assurance artefacts required to achieve and sustain Defence security authorisation.
• Drive security governance, risk, and compliance (GRC) outcomes in alignment with Defence security frameworks and program requirements.
• Lead cyber security risk management activities and provide trusted risk advice to program and engineering leadership.
• Provide subject matter expertise on the PSPF, ISM, and DSPF.
• Engage with Defence stakeholders and authorisation authorities to progress security authorisation activities.
• Support business development, bid, and capture activities through cyber security expertise and compliance guidance.
• Mentor and provide technical leadership to security practitioners across the business.

Skills, Experience and Qualifications

• 8+ years' experience in cyber security, systems engineering, or a related discipline, preferably within Defence or the Defence industry.
• Strong knowledge and practical application of the Protective Security Policy Framework (PSPF), Defence Security Principles Framework (DSPF), and ACSC Information Security Manual (ISM).
• Demonstrated experience leading Cyber Security Assessment and Authorisation (CSAA) activities and developing security artefacts, including SSPs, SSP-As, SRMPs, IRPs, CMPs, SAPs, and POAMs.
• Experience applying security governance, risk, and compliance (GRC) principles within complex programs and operating environments.
• Ability to translate complex technical and cyber security risks into clear, actionable advice for engineering, program, and customer stakeholders.
• Strong stakeholder engagement and communication skills, with experience engaging Defence customers, authorisation authorities, and multidisciplinary delivery teams.
• Experience supporting business development, bid, and capture activities is highly regarded.
• Relevant industry certifications are highly regarded, including CISSP, CISM, CISA, SABSA, or IRAP Assessor.
• Excellent written communication skills, with a demonstrated ability to produce high-quality security documentation and assurance artefacts.

Eligibility

• To be considered for this role, you must be an Australian Citizen and hold, or be eligible to obtain and maintain, an Australian Government Security Vetting Agency (AGSVA) Security Clearance at the NV1 level or higher.
• Eligibility can be found at

RTX adheres to the principles of equal employment. All qualified applications will be given careful consideration without regard to ethnicity, color, religion, gender, sexual orientation or identity, national origin, age, disability, protected veteran status or any other characteristic protected by law.

RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.