Melbourne AWS Systems Engineer - Cloud & Security

Connect Sydney; Melbourne; On-site; AUD 120,000 - 170,000; Full time

Benefits offered by this job

Growth and career development

Discounts and perks

Paid leave options

Diversity and inclusion culture

Job summary

Service Stream, Melbourne, seeks an experienced AWS Systems Engineer to administer and optimise AWS, Microsoft 365, Windows and Linux environments. The role focuses on security uplift, automation and operational excellence across a national technology environment.

You will manage patching, vulnerability remediation and platform hardening, while supporting hybrid cloud and Azure services. A Defence clearance may be required.

Qualifications

• 3+ years' experience in systems administration or infrastructure engineering.
• Strong AWS administration across core cloud services.
• Hands-on experience supporting Windows Server and Linux environments.
• Microsoft 365 administration experience, including Entra ID, Exchange Online, Teams, SharePoint and Intune.
• Experience managing patching, vulnerability remediation and security controls.
• Knowledge of enterprise networking technologies including DNS, VPNs and firewalls.
• Scripting and automation using PowerShell and/or Python.
• Strong troubleshooting, analytical and problem-solving skills.
• Excellent stakeholder engagement and communication skills.
• A proactive mindset with a passion for continuous improvement.

Responsibilities

• Administer and optimise AWS environments, including EC2, VPC, IAM, S3 and cloud networking.
• Support Azure services and hybrid cloud environments. Monitor performance, utilisation and cloud costs to ensure efficient operations.
• Manage Windows Server and Linux environments. Maintain Active Directory, Group Policy, DNS and DHCP services. Perform system patching, hardening, upgrades and lifecycle management.
• Manage and support Microsoft 365 services including: Entra ID, Exchange Online, Teams, SharePoint Online, Intune.
• Drive security improvement initiatives and platform hardening. Manage vulnerability remediation programs and patch compliance.
• Support enterprise networking technologies including firewalls, DNS, VPN and load balancing. Manage network equipment lifecycle activities and firmware updates.
• Develop automation solutions using PowerShell and Python. Identify opportunities to reduce manual effort and improve operational efficiency.
• Maintain monitoring and alerting across infrastructure and cloud platforms. Participate in incident response and root cause investigations. Manage backup, recovery and resilience processes to support business continuity.

Skills

AWS Administration

Windows Server

Linux

Microsoft 365

Patching & security

Networking (DNS/VPN)

Scripting: PowerShell/Python

Troubleshooting

Stakeholder engagement

Continuous improvement

Education

Degree in IT/CS/Engineering

AWS Solutions Architect Associate / AWS SysOps

Azure Administrator / Security certs

Microsoft 365 certifications

CCNA or networking certs

ITIL Foundation

Security certifications (CompTIA Security+ / Microsoft SC-200)

Job description

Service Stream, Melbourne, seeks an experienced AWS Systems Engineer to administer and optimise AWS, Microsoft 365, Windows and Linux environments. The role focuses on security uplift, automation and operational excellence across a national technology environment.

You will manage patching, vulnerability remediation and platform hardening, while supporting hybrid cloud and Azure services. A Defence clearance may be required.