About Emesent

Emesent is a Brisbane-based world leader in autonomous LiDAR mapping and drone autonomy. Our flagship product, Hovermap, delivers autonomous LiDAR mapping in GPS-denied environments for the Mining and Defence sectors. Our newly launched GX1 brings high-performance handheld LiDAR to surveying and the built environment. Behind both sits a pipeline of future hardware products and a team that takes hard engineering problems from concept to the field.

Role Description

The System Administrator reports to the Director of IT & AI and sits within a small IT team. The role is responsible for the design, operation, security, and continuous improvement of the organisation's corporate IT environment. This spans on-premises and cloud infrastructure, Microsoft and Linux platforms, identity and access management, SaaS integrations, endpoint fleet management, and internal engineering compute clusters.

The role is both hands-on and enabling, keeping day-to-day operations running reliably while helping engineering and business teams adopt recent technologies, tools, and workflows safely. The successful candidate will act as a technical escalation point (L2/L3) for the service desk and will contribute to governance, disaster recovery, and cybersecurity initiatives across the business.

Key Responsibilities:

Infrastructure & Operations

- Administer Windows Server environments, including Group Policy, DNS, DHCP, file and certificate services.

- Provide L2/L3 operational support, resolving escalations from the Service Desk and complex infrastructure incidents.
- Mentor and support L1/L2 Service Desk staff, building their technical capability.

- Prioritise tickets in the infrastructure queue, ensuring incidents and requests are resolved within agreed SLAs.
- Administer Microsoft 365, including Exchange, Teams, SharePoint, and Intune.
- Manage endpoint provisioning and lifecycle for a globally distributed workforce across Windows, macOS, and Linux.
- Administer VMware and Linux compute clusters and AWS environments,



including capacity planning and performance management.
- Maintain VPN infrastructure for remote and on-site personnel.
- Administer network configuration for Brisbane HQ and remote sites (switching, routing, firewalls, wireless).
- Own DR and business continuity initiatives, including backups, restore testing, and infrastructure resilience.
- Enable teams to safely adopt new technologies and workflows, including internally developed tools.
- Support the secure adoption and governance of AI tools and services across the business, including access controls, data protection, and integration with existing platforms.

Identity & Access Management

- 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.

Cybersecurity

- 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.

Governance

- 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.

Skills & Experien

📌 Senior System Administrator — Hybrid IT, Cloud (Brisbane)
🏢 Emesent
📍 Brisbane