System Administrator

Maintain Active Directory and Microsoft Entra ID, SSO, MFA, Conditional Access, and hybrid identity sync.

Improve access management through Entra ID integrations with SaaS platforms and AWS (SAML/OIDC/SCIM), including automated provisioning and deprovisioning.

Implement least-privilege RBAC and manage the joiner/mover/leaver process; conduct periodic access reviews.

Enforce endpoint security policies across Windows, macOS, and Linux using Intune, Defender, and equivalent tooling.

Own patch management and vulnerability management across servers, endpoints, and network devices.

Maintain firewalls, email security (DMARC/DKIM/SPF), web filtering, and endpoint detection and response.

Monitor security alerts, investigate and contain incidents, and support penetration test remediation.

Harden systems against recognised baselines (CIS, Microsoft baselines, ASD Essential Eight).

Support cybersecurity governance, risk, and compliance initiatives.

Maintain documentation, network topology, and the asset register.

Operate and improve change management, including risk assessment, approvals, and rollback planning.

Contribute to IT policies and standards and support audits and compliance.

Track licensing compliance, maintain the IT risk register, and contribute to DR/BC planning (RTO/RPO, DR exercises).

Contribute to and uphold the organisation’s AI policy.

Relevant certifications, such as Microsoft (AZ-104, SC-300), AWS Solutions Architect, CCNA, or RHCSA.

Experience applying security baselines (CIS, Microsoft, ASD Essential Eight) in a compliance or audit context.

Experience supporting engineering or HPC compute environments.

Emesent builds LiDAR mapping and autonomy technology for the world's most challenging environments. Founded in 2018 from Australia's CSIRO, our products — Hovermap, GX1, and the Aura software platform — capture spatial data in hazardous, GPS-denied, and hard-to-reach places for mining, survey, and infrastructure customers worldwide. With multiple product lines spanning hardware, desktop, and cloud, we're at an inflection point — and this role sits at the technical heart of it.