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Salary
≈ $96k – $234k per year (Estimated)
Location
In office (Sydney)
Seniority
Architect · 5+ years exp

Confirmed on the employer's own hiring board on Oct 16, 2026. First seen by Alion on Oct 16, 2026.

Overview
Company
Impact
Profile match
Mission critical technology solutions and services for a safe and secure Australia.

As the Cyber Security Architect in C4i Solutions you will provide security architecture and technical leadership across complex Defence and mission-critical environments. You will design and review secure solutions, translate operational and security requirements into practical architectures, and provide expert advice across risk, assurance, accreditation and system delivery. Working closely with Defence customers, engineers and delivery teams, you will apply ISM, PSPF and secure-by-design principles to help deliver resilient, scalable and secure technology solutions that support critical operational outcomes.

This is an opportunity to join an Australian veteran-owned organisation where your cyber security expertise will directly contribute to mission-critical capability and Australia's national security.

You will be responsible for:

  • Leading the design, development and review of secure, resilient and scalable cyber security architectures across Defence and mission-critical environments.
  • Translating operational, business, technical and security requirements into practical architectures, controls and design solutions, applying secure-by-design, defence-in-depth and risk-based principles.
  • Assessing security risks, threats, vulnerabilities, attack surfaces, system dependencies and emerging technologies, and develop appropriate mitigation strategies.
  • Applying Australian Government security requirements, including ISM and PSPF, across architecture, design and security assurance activities.
  • Developing and maintain security architecture, requirements, risk assessments, control mappings and assurance documentation, supporting accreditation, authorisation, IRAP and remediation activities.
  • Providing technical security leadership and advice to engineering, project and delivery teams, establishing security architecture standards, patterns and reusable design principles.
  • Reviewing technologies, system changes, integrations and third-party solutions to identify security impacts and ensure compliance with applicable security requirements.
  • Engaging with Defence customers, system owners, security authorities and technical stakeholders to understand requirements, communicate risks and deliver effective security solutions.
  • Leading and participate in architecture reviews, design workshops, risk assessments and technical engagements, while contributing to continuous security assurance and the ongoing development of C4i Solutions' cyber security architecture capability.

About you:

  • Australian citizen (required for Defence projects) with a min AGSVA NV1 clearance (Ability to upgrade to NV2).
  • Tertiary qualification in Cyber Security, Information Technology, Computer Science, Software Engineering, Systems Engineeringor a related discipline; or equivalent demonstrated industry experience.
  • Relevant professional experience in cyber security architecture, information security, systems security or a closely related field and;
  • A relevant certification such as CISSP, CISM or ISO27001-Lead Auditor, SANS 401 highly regarded.
  • A min of 5 years' experience within a Defence classified ICT environment.
  • Be willing to work as part of an on-call roster on a periodic basis.
  • Strong analytical and reporting skills.
  • Excellent communication and stakeholder engagement skills Ability to work in high-pressure, secure ICT environments.

Why Join Us?

  • Veteran-Focused: As a Veteran-owned and operated company, we value your service. Our Veteran Career Development Program is designed to support your transition and future career growth. Defence Veterans are strongly encouraged to apply.
  • People First: Were a company that puts people at the centre. Fostering a culture of wellbeing, engagement, and respect for your unique skills.
  • A Culture That Values You: Be part of a passionate, supportive, and growing team that recognises your contribution and rewards success.
  • And we like to keep things real. We work hard, support each other, and make space for a laugh along the way.

Benefits We Offer:

  • Long Service Leave @ 7 years: Take long service leave after 7 years' service (Pro-rata).
  • Health & wellbeing allowance: Our annual Health & Wellbeing allowance ($250) helps you stay fit and healthy.
  • First year leave (5 days): We offer 5 additional leave days in your first year to help you settle in!
  • Birthday leave: We know your birthday is a special day! Take the day off and relax on us!
  • Higher Education Subsidy: Obtain a higher qualification relevant to your role while working with us and receive a $2500 contribution annually. This includes certification fees on digital learning courses.
  • Veteran Engagement: At C4i Solutions, we understand that leaving the ADF can be a daunting time. We've been there, as we know from our own experience. Our Veteran Career Development Program offers a range of support and development activities for ADF veterans and their partners, so that your transition from the ADF is seamless and supported.
  • Service Awards: We acknowledge your service with us through 1, 3, 5, and 10-year awards.
  • Employee Recognition: We reward our people when they go above and beyond.
  • Donate for a Cause: Donate to a charity of your choice and we'll match it up to a value of $200!
  • PLUS, much more!

Be you, with us:

If you're looking for a workplace where your skills, experience, and dedication are genuinely valued we'd love to hear from you. We are a close-knit team of veterans, problem-solvers, tech heads, dads, mums, soccer coaches, and weekend adventurers who love what we do, like to have a bit of fun, and don't take ourselves too seriously. What brings us together is a passion for doing great work that makes a real difference to those who serve.

If this sounds like your kind of team, apply now. We'd love to hear from you.

www.C4isolutions.com.au

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