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 workplace.

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

#J-18808-Ljbffr

📌 System Engineer (Port Phillip City)
🏢 Service Stream
📍 Port Phillip City