Trusted ICT Delivery for Australian Government
Calexi supports federal agencies with secure-by-design solutions, cyber uplift, and program assurance all tailored for complex government environments.
Delivering capability securely and on time? Let’s talk.
Industry Challenges and Opportunities
Australia’s federal government is in a period of accelerated digital reform. From Defence and intelligence to health, social services, and infrastructure, agencies are tasked with modernising platforms, improving security posture, and maintaining uptime in environments governed by tight regulation and public accountability.
Legacy systems, fragmented procurement, and under-resourced delivery teams often stand in the way of progress. At the same time, compliance mandates like the Protective Security Policy Framework (PSPF), Information Security Manual (ISM), and Essential Eight require agencies to demonstrate measurable cyber maturity and control effectiveness.
Departments need experienced, security-cleared partners who can move quickly within government structures, translate complex requirements, and deliver fit-for-purpose outcomes.
Tailored Solutions for Australian Government
Calexi brings proven experience across government-led programs, Defence initiatives, and secure system delivery. Our consultants understand the expectations of federal stakeholders — and the real-world constraints that shape delivery.
We help government agencies:
- Conduct gap assessments against ISM and PSPF controls
- Plan and implement Essential Eight uplift programs
- Design and accredit secure ICT systems
- Integrate and modernise legacy platforms
- Provide cleared engineering and program delivery staff
- Lead project recovery and risk remediation efforts
- Build DevOps pipelines for secure cloud environments
- Develop ATO documentation and support accreditation
We bring a continuous assurance mindset. This helps operators embed security into operations without compromising safety or From urgent capability delivery to long-term transformation, we operate inside government constraints and deliver with confidence.
Our Experience in the Field
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Defence Cyber Training Environment
Calexi led the rapid redesign and remediation of a critical Defence cyber training environment, reducing risk levels, lifting Essential Eight compliance by more than 30%, and enabling the successful completion of a multinational exercise. Our secure-by-design approach delivered measurable, sustainable improvements under tight time and compliance pressures.
![fixing the cracks in broken projects professionals reviewing where projects are broken down.]()
Ransomware Incident Response
When a ransomware attack exposed poor practices and failed backups, Calexi led the recovery, restored three months of data, implemented emergency fixes, and re-architected the ICT environment. The organisation avoided major reputational and financial loss while strengthening long-term resilience.
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Cyber Security Tabletop Exercise for a Critical Infrastructure Water Operator
A transport critical infrastructure project was at risk due to cascading system failures caused by poor maintenance in a high-security environment. Calexi rapidly stabilised the systems in 2 weeks, reduced the risk profile from very high to medium, recommenced commissioning, and delivered a comprehensive maintenance plan with strong stakeholder confidence.
Why Calexi for Government
We understand how government works and what’s at stake when delivery falters. Our consultants hold active government clearances and have deep experience delivering inside APS, Defence, and regulated agency environments.
We speak the language of security, compliance and capability not just buzzwords. Whether embedded into government teams or operating as independent delivery support, Calexi brings the grit, clarity and accountability federal programs demand.
We’re DISP-aware, ISM-aligned and focused on outcomes that stand up to internal audits, public scrutiny and operational use.