System Engineer

Connect Sydney; City of Melbourne; On-site; AUD 90,000 - 120,000; Full time

Benefits offered by this job

Growth

Discounts

Paid Leave

Culture

Job summary

Service Stream is hiring a Systems Engineer to maintain and improve our hybrid infrastructure, cloud platforms and Microsoft 365. You will secure, patch, automate and monitor Windows and Linux environments across AWS, Azure and on‑prem networks.

Join a collaborative team focused on ownership and practical problem solving, with after-hours support and runbook maintenance as part of a true run‑and‑improve role.

Qualifications

• Hands-on administration of Windows Server and Linux environments.
• Experience with AWS/Azure and Microsoft 365 administration.

Responsibilities

• Maintain and improve core platforms across Windows, Linux, cloud and on‑prem environments.
• Drive security hardening, patching and vulnerability remediation.
• Manage SSL/TLS certificates and licensing.
• Automate tasks using PowerShell or Python and IaC approaches.
• Monitor systems, respond to incidents and perform root cause analysis.
• Maintain runbooks and documentation; participate in after-hours support.

Skills

Windows Server

Linux

AWS

Azure

Microsoft 365

Vulnerability management

Automation

Education

Degree in IT/Computing

Information security mindset

Tools

PowerShell

Python

Job description

Primary Location VIC - Melbourne - 655 Collins St

Service Stream is looking for a hands-on Systems Engineer to help maintain and continuously improve our infrastructure, cloud platforms and Microsoft 365 environment. This is a role for someone who enjoys variety. One day you might be hardening servers, remediating vulnerabilities or managing certificates; the next you're troubleshooting cloud services, automating repetitive tasks, or improving the way we manage our environments. You'll be joining a team that values ownership, collaboration and practical problem solving. We need someone who doesn't wait for problems to become incidents, but actively looks for ways to make systems more secure, reliable and efficient. Please note: This is a full-time permanent role based at our Collins Street office, with genuine hybrid flexibility and is only open to Australian Citizens.

About the Role

As our Systems Engineer, you'll be responsible for the day-to-day operation, security and continuous improvement of Service Stream's core technology platforms. Working across Windows and Linux infrastructure, AWS and Azure cloud environments, Microsoft 365 and enterprise networking, you'll help ensure our systems remain secure, patched, available and ready to support the business. This is a true run-and-improve role. You'll focus on operational excellence, automation, security uplift and keeping the lights on, while continually finding smarter ways to do things. You'll work closely with application teams, service providers and technology stakeholders across the business to maintain a reliable and modern technology environment.

What You'll Do

• Keep our Windows Server and Linux environments secure, patched and performing at their best
• Administer and optimise AWS and Azure services across compute, storage, networking and identity
• Drive patching and vulnerability remediation activities to improve security posture and compliance
• Manage the full SSL/TLS certificate lifecycle to ensure services remain available and protected
• Administer Microsoft 365, including Entra ID, Exchange Online, Teams, SharePoint and Intune
• Support enterprise networking technologies, including firewalls, VPNs, DNS and load balancing
• Manage software licence renewals and vendor relationships to minimise risk and unnecessary spend
• Monitor infrastructure and cloud environments, respond to incidents and perform root cause analysis
• Automate repetitive tasks using PowerShell, Python and infrastructure-as-code approaches
• Support backup, recovery and resilience processes to ensure business continuity
• Maintain clear documentation, standards and operational runbooks
• Participate in after-hours support and maintenance activities when required

What You'll Bring

• Must be an Australian Citizen
• Around 3+ years' experience in systems administration or infrastructure engineering within a medium to large enterprise environment
• Strong Windows Server administration experience, including Active Directory, Group Policy, DNS and DHCP
• Practical Linux administration skills and troubleshooting experience
• Experience supporting AWS services such as EC2, IAM, VPC and S3
• Microsoft 365 administration experience across user, device and licence management
• Exposure to vulnerability management, security hardening and patching practices
• Understanding of enterprise networking concepts and technologies
• Experience working with vendors, support providers and software licensing
• Automation and scripting capability using PowerShell and/or Python
• Strong analytical and problem-solving skills with a proactive mindset
• Clear communication skills and the ability to work effectively with both technical and non-technical stakeholders

Preferred Qualifications

• Degree in Information Technology, Computer Science, Engineering or a related discipline, or equivalent practical experience
• AWS Solutions Architect Associate or AWS SysOps Administrator certification
• Microsoft Azure certifications such as AZ-104 or AZ-500
• Microsoft 365 certifications including MS-102 or MD-102
• Cisco CCNA or equivalent networking certification
• Security certifications such as Security+ or SC-200
• ITIL Foundation or experience working within structured change and incident management frameworks

About Us

Service Stream is an equal opportunity ASX-listed organisation that develops and operates Australia's essential service networks across telecommunications, utilities, transport, defence and social infrastructure. Our work supports and connects communities across the nation.

We celebrate diversity at Service Stream and welcome applications from Aboriginal and/or Torres Strait Islander peoples, people with disability or neurodivergence, and those from LGBTIQA+, Veteran or other diverse groups.

Service Stream, together with its subsidiaries and affiliates, is a leading national service provider to develop and operate Australia's essential communications, energy and water networks in the telecommunications and utilities industries. We specialise in the design, construction and maintenance of new and existing networks, and deliver end-to-end engineering and asset management solutions on behalf of our blue chip client base.

Benefits of Working with Us

• Growth – Build your technical capability across cloud, infrastructure, security and modern workplace technologies.
• Discounts – Access to hundreds of retail and service discounts including Woolworths, JB Hi-Fi, Airbnb and Bupa.
• Paid Leave – Parental, cultural, community service, study, corporate volunteering and purchased leave options.
• Culture – Join a team that values accountability, collaboration, inclusion and continuous improvement.