Secure Delivery for Defence Programs
Calexi helps Defence deliver critical capability with speed, clarity and assurance; even in the most complex environments.
Ready to reduce risk and accelerate outcomes? Contact our Defence solutions team today.
Industry Challenges and Opportunities
Australia’s Defence landscape is shaped by increasing operational demands, evolving threats and complex multi-domain programs. Delivery is often delayed by layered approvals, legacy infrastructure, fragmented systems, and resourcing gaps.
Cyber resilience is now a fundamental capability, yet many programs struggle to align with the ISM, Essential Eight and DISP requirements while keeping pace with integration deadlines. Decision-makers need trusted partners who can move fast, interpret context and connect the dots across capability, security and technology.
At the same time, Defence is under pressure to accelerate digital transformation, modernise infrastructure, and enable secure interoperability between units, domains and partners. That requires not just compliance, but strategic engineering leadership that understands how Defence really works.

Tailored Solutions for Defence
Calexi brings Defence-ready expertise across systems engineering, cyber uplift and complex delivery support. Our consultants are security-cleared, outcomes-focused and deeply familiar with the Defence operating environment.
We help Defence clients:
- Design and deliver secure, mission-ready systems
- Align projects with ISM, PSPF, Essential Eight and DISP compliance
- Recover and realign projects at risk or facing delivery pressure
- Integrate multi-vendor platforms and mission systems
- Provide program leadership and delivery assurance
- Engineer high-assurance architectures for classified environments
- Conduct cyber threat mitigation and uplift assessments
- Lead requirements analysis, interface design and system orchestration
We work closely with uniformed, APS and industry stakeholders, translating complexity into action and ensuring outcomes are delivered securely, on time and with purpose.
Our Experience in the Field
High-Assurance Defence Network Leadership

Calexi staff previously led the full lifecycle engineering, accreditation and operational support of a high-assurance Defence ICT environment. This included architecture development, classified system deployment, stakeholder coordination and long-term sustainment. The solution aligned with DISP and ISM frameworks and was delivered under pressure in a live operational setting.
Rapid Capability Assessment and Technology Uplift
Calexi staff were brought in at short notice to assess the health of a Defence capability. Our consultants identified systemic technology gaps and prioritised remediation pathways to mitigate operational risk. Their work not only stabilised the immediate environment but also set the foundation for scalable, future-ready capability delivery. This demonstrates the kind of critical thinking and system-level insight Calexi now delivers to clients.

Why Calexi for Defence
We understand that Defence work requires more than technical expertise. It requires discretion, structure, and the ability to operate within strict regulatory, cultural and mission constraints.
Calexi is veteran-owned, ACT-based, and led by professionals who have delivered into Defence for over a decade. Our consultants hold current security clearances and have hands-on experience delivering secure ICT, cyber and engineering solutions across Defence, national security and critical infrastructure sectors.
We don’t just understand complexity. We reduce it, translate it and deliver through it.