Amentum is a leader in global engineering, project management and solutions integration, trusted to modernise the most critical missions anywhere in the world. Driven to create a safer, smarter, cleaner world, we innovate as a team of inventive doers passionate about making a difference. Underpinned by a strong culture of ethics, safety and inclusivity. Amentum is fiercely committed to operational excellence and successful execution. 

Are you seeking a career that offers a healthy work-life balance, a friendly company culture, and engagement with a supportive community? 

We’ll inspire and empower you to deliver your best work so you can evolve, grow and succeed – today and into tomorrow.  We offer an exciting range of opportunities to develop your career within a supportive and diverse team who always strive to do the right thing for our people, clients and communities. 

People are our greatest asset, and we offer a competitive package to retain and attract the best talent.  

Our values stand on a foundation of safety, integrity, inclusion and diversity. We put people at the heart of our business, and we genuinely believe that we all succeed by supporting one another through our culture of caring. We value positive mental health and a sense of belonging for all employees.  

Amentum is proud to be an Equal Opportunity Employer, please refer to our Enterprise Agreement and www.fairwork.gov.au for more information.

Role Description:

The Deputy Cyber Manager provides specialist Cyber and ICT systems security expertise to ACSPO, supporting complex and sensitive capability environments, including up to and including Special Access Programs (SAP). The position works closely with internal and external stakeholders across Defence, providing authoritative advice on cyber readiness, system security, assurance, and accreditation.

The successful candidate will liaise with stakeholders at all levels, build strong working relationships, and act as a key point of contact for operational security enquiries.

This full-time position is based at Williamtown, near Newcastle. 

Day to day tasks include:

• Act as a key point of contact for operational ICT and cyber security enquiries, engaging with stakeholders at all levels across Defence and industry.
• Delivering system security services, including Cyber readiness verification, assurance, and authorisation support for ACSPO ICT systems.
• Providing Subject Matter Expert (SME) advice on Cyber and information security, including technical, policy, and governance matters, to internal and external stakeholders.
• Planning, conducting, and documenting ICT system certification and accreditation activities, including systems up to and including Special Access Programs (SAP), in accordance with ASIG and the Risk Management Framework (RMF).
• Developing Assessment and Authorisation (A&A) artifacts to Defence writing standards and providing risk‑based recommendations to authorising bodies.
• Identifying, managing, and validating ICT system security requirements through security planning, design, implementation, and verification and validation (V&V).
• Supporting capability and concept development in technical security, ensuring compliance with Defence security policy, governance, and assurance frameworks.
• Producing high‑quality security documentation and providing expert cyber security advice to support operational outcomes and resolve system security issues.

Essential Requirements:

• You are a cyber and ICT security professional, comfortable working in complex, highly regulated environments. You understand both the technical and governance aspects of security, with the ability to translate technical requirements into effective governance outcomes, including supporting system authorisation and accreditation activities.
• You engage confidently with Technical Specialists, Project Teams, and Senior Stakeholders, bringing a practical, risk-based approach to security assurance. You demonstrate strong stakeholder engagement skills and emotional intelligence, adapting your communication style to suit a range of audiences.
• Success in this role comes from thriving in collaborative, small team environments while contributing your expertise across a broader organisational context. You are also capable of stepping up when required, ensuring continuity of direction and decision-making.
• Demonstrated experience in ICT and cyber security accreditation aligned with organisational policy and governance frameworks.
• Experience providing security assurance, certification, and accreditation advice for ICT systems, including high‑security environments.
• Strong verbal and written communication skills, including the ability to interpret and provide advice on policy, procedures, and governance requirements.
• Proven ability to work collaboratively across a broad, complex organisational environment while delivering specialist cyber security services

Required security clearance level: NV2

Location: Williamtown, NSW

Weekly Hours: 40 hours, Monday-Friday, Onsite

Compensation Details:

The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• Health, dental, and vision insurance

• Paid time off and holidays

• Retirement benefits (including 401(k) matching)

• Educational reimbursement

• Parental leave

• Employee stock purchase plan

• Tax-saving options

• Disability and life insurance

• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting:

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed,  marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.