L3 Systems Engineer

About the Role

As a Level 3 Systems Engineer, you will serve as a senior technical escalation point while playing a key role in infrastructure and security project delivery. You will take ownership of complex technical incidents, perform advanced troubleshooting and root-cause analysis, and design, configure and deploy solutions across cloud and on-premises environments.

Working alongside senior engineers, project managers and technical leadership, you will help strengthen escalation capability, support project delivery and provide technical guidance to Level 1 and Level 2 engineers.

About the Client

You will be working with a growing Australian managed services and technology provider supporting organisations across commercial, government, education, healthcare, not-for-profit and community sectors.

The business delivers cloud and on-premises infrastructure, managed IT support, cybersecurity and compliance, networking, communications, and specialist technology solutions. It maintains a strong focus on security, high-quality documentation and dependable service delivery.

Ideal Profile

Background & Experience

• Demonstrated Level 3 or senior systems engineering experience within an MSP or complex, multi-site IT environment.
• Advanced troubleshooting expertise across Microsoft 365, Windows, cloud and on-premises infrastructure.
• Strong knowledge of Microsoft cloud technologies, security, identity, endpoint and access management.
• Solid experience with servers, virtualisation, networking, firewalls and infrastructure deployments.
• Proven ability to own complex incidents, identify root causes and determine effective resolutions or escalation paths.
• Experience contributing to or delivering infrastructure and technology projects from configuration through deployment.
• Strong understanding of cybersecurity and compliance-focused environments.
• Familiarity with the Australian Essential Eight is strongly preferred; exposure to ISO-aligned, DISP, SOCI or comparable environments is highly regarded.
• MSP experience is preferred, although candidates from sophisticated internal IT environments may also be considered.
• Exposure to VMware, SD-WAN, Starlink, remote-community networks, IoT, cameras, alarms or building systems is advantageous.
• Experience with PSA, RMM and knowledge-management platforms is desirable.
• Strong technical fundamentals with the ability to quickly learn new technologies and vendor platforms.

Systems & Tools

• Microsoft 365, including Intune, Purview, Defender for Endpoint and Defender for Cloud.
• Microsoft Azure and Entra ID.
• SharePoint and Microsoft Teams.
• Google Workspace.
• EasyDMARC, ConnectSecure and ThreatLocker.
• Blackpoint Cyber SOC/MDR and Keeper Password Manager.
• Exclaimer, Phriendly Phishing, Inforcer and AdminDroid.
• Datadog.
• Datto Autotask PSA, Datto RMM and Datto SaaS Protection.
• Hyper-V and VMware.
• 3CX voice systems and Adobe products.

Hardware & Infrastructure

• Fortinet firewalls and associated security products.
• Ubiquiti networking, wireless, routing, security and camera solutions.
• Ruckus Wi-Fi and D-Link networking technologies.
• Lenovo, Dell, Apple, HP, ASUS and other endpoint hardware.
• Datto BCDR backup solutions.

Professional Skills

• Ability to work autonomously while collaborating effectively with senior engineers, project managers and wider technical teams.
• Strong written and verbal communication skills.
• High standards of technical documentation and knowledge sharing.

Responsibilities

• Act as a senior escalation point for complex, high-impact and persistent technical incidents.
• Lead advanced troubleshooting and root-cause analysis across Microsoft 365, Microsoft security, identity, endpoints, cloud and on-premises infrastructure.
• Design, build, configure and deploy infrastructure and security solutions for technology projects.
• Support server, virtualisation, networking, firewall, SD-WAN, remote-site and security uplift initiatives.
• Collaborate with senior engineers, project managers and technical leadership throughout project deployments.
• Provide technical guidance to Level 1 and Level 2 engineers and assist with complex escalations.
• Review technical changes with consideration for security, operational risk and compliance requirements.
• Apply cybersecurity frameworks such as the Australian Essential Eight to practical configurations, controls and remediation activities.
• Create and maintain solution designs, configurations, handover materials and technical documentation.
• Maintain accurate ticket, project and service records across PSA and RMM platforms.