Managed ICT Systems Administration for Government and Business
Calexi delivers reliable, secure ICT support across Windows, Linux, cloud and on-prem environments. Allowing you to focus on your mission.
Contact our team to streamline ICT operations, reduce risk and maintain assurance across your infrastructure.
Reliable ICT operations are essential to business continuity and compliance. At Calexi, we provide fully managed systems administration services across cloud, on-prem, and hybrid environments. With a strong focus on availability, repeatability and alignment to Defence and government standards.
Our team supports Windows and Linux environments, conducts patching and updates, manages backups and restores, and tunes performance for consistent service delivery. We document configurations, maintain operational runbooks, and ensure repeatable outcomes across platforms.
We are experienced in operating under ITIL-aligned frameworks and have worked across Microsoft, Atlassian, and other enterprise service ecosystems. Whether you’re seeking outsourced support or embedded capability, Calexi brings the consistency, security, and situational awareness required in high-assurance environments.
Key Service Features
- Windows and Linux systems administration
- Managed cloud and on-prem infrastructure
- Patch management and software updates
- Backup and disaster recovery configuration
- Incident response and troubleshooting
- Runbook documentation and change control
- DISP-aligned ICT support for Defence clients
- System performance tuning and optimisation
- ITIL-based service management workflows
- Microsoft 365 and Atlassian integration
Proven Capability in the Field
Embedded ICT Operations for a Defence Industry Client
Calexi staff were deployed as an embedded ICT department within a Defence industry organisation, supporting daily ICT operations and ensuring continuity of DISP accreditation. Our consultants managed patching, incident response, system updates and documentation, providing responsive, high-integrity support in a complex regulatory environment.
Systems Administration for Defence ICT Networks
Calexi staff oversaw day-to-day administration of Defence ICT systems, including patching, user operations, system commissioning and decommissioning. Their work ensured system stability, enabled new capability, and maintained operational compliance under Defence security frameworks. This experience demonstrates our ability to operate with precision and discretion in mission-critical environments.
Why Calexi
Calexi combines deep technical expertise with disciplined operations management to keep your systems secure, available and compliant. Our consultants hold Defence-relevant clearances and bring first hand experience in managing complex ICT environments for public sector, Defence and critical infrastructure clients.
We don’t just fix issues, we prevent them. Our approach is proactive, documented and aligned with your assurance goals. From ITIL workflows to vendor platform integrations, Calexi delivers ICT systems administration that you can trust.