System Engineer

Service Stream; City of Melbourne; Hybrid; AUD 110,000 - 140,000; Full time

Benefits offered by this job

Hybrid work flexibility

Growth opportunities

Discounts on services

Job summary

Service Stream is seeking a hands-on Systems Engineer to maintain and improve our infrastructure, cloud platforms, and Microsoft 365 environment from the Collins Street office with genuine hybrid flexibility.

You will work across Windows and Linux, AWS and Azure, and enterprise networking to keep systems secure, reliable and efficient while automating repetitive tasks and driving security uplift.

Qualifications

• Must be an Australian Citizen.
• 3+ years' experience in systems administration or infrastructure engineering in a medium to large enterprise.
• Strong Windows Server administration including AD, DNS, DHCP.
• Practical Linux administration and troubleshooting.
• Experience with AWS services (EC2, IAM, VPC, S3).
• Microsoft 365 administration across user, device and license management.
• Exposure to vulnerability management, security hardening and patching.
• Enterprise networking concepts and technologies.
• Vendor management and software licensing experience.
• Automation using PowerShell and/or Python.

Responsibilities

• Keep Windows Server and Linux environments secure, patched and performing.
• Administer and optimise AWS and Azure services across compute, storage, networking and identity.
• Patch and remediation activities to improve security posture.
• Manage SSL/TLS certificate lifecycle for availability and protection.
• Administer Microsoft 365 including Entra ID, Exchange Online, Teams, SharePoint and Intune.
• Support enterprise networking technologies (firewalls, VPNs, DNS, load balancing).
• Manage software licences renewals and vendor relationships.
• Monitor infrastructure and respond to incidents; perform root cause analysis.
• Automate tasks using PowerShell, Python and IaC approaches.
• Support backup, recovery and resilience processes; maintain runbooks.

Skills

Windows Server

Linux

AWS

Azure

Microsoft 365

Security hardening

Automation scripting

PowerShell

Python

Networking

Education

Degree in IT/CS/Engineering

AWS Solutions/ SysOps or Azure certs

Job description

Primary Location

VIC - Melbourne - 655 Collins St

Job Description Summary

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.

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.

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.

Department

Engineering