Senior Systems Engineer

Private Advertiser; Melbourne; On-site; AUD 120,000 - 180,000; Full time

Job summary

Private Advertiser in Melbourne is seeking a Senior Systems Engineer to own complex infrastructure projects across Microsoft 365, Azure, AWS, Windows Server, and Linux. You will design, implement, and secure hybrid environments, automate tasks with PowerShell and Python, and take ownership from planning to handover in a hands-on MSP setting.

You will tackle high‑level escalations, partner with clients, and drive reliability through automation, monitoring, and security best practices.

Qualifications

• Experience in a Senior Systems Engineer or Level 3 role.
• Proven ability to independently deliver infrastructure and cloud projects.
• Solid Microsoft 365, Azure, Entra ID, Intune, Active Directory, and Windows Server experience.
• Excellent troubleshooting skills and a strong understanding of networking fundamentals.
• Experience with virtualization, backup, and disaster recovery.
• Good security knowledge, particularly Microsoft Defender and incident investigation.
• PowerShell scripting skills and an automation-first mindset.
• Linux administration experience and confidence working from the command line.

Responsibilities

• Lead and deliver infrastructure projects, including M365 migrations, Azure deployments, server upgrades, and cloud migrations.
• Designing, implementing, and improving environments across Microsoft 365, Azure, AWS, Windows Server, and Linux.
• Working with networking, virtualization, backup, disaster recovery, and hybrid infrastructure.
• Taking ownership of projects from technical planning through to implementation and handover.
• Investigating and resolving challenging Level 3 issues across servers, networks, cloud platforms, identity, and security.

Skills

Senior Systems Engineer

Independent delivery

Cloud projects

Networking fundamentals

Scripting

Automation mindset

Strong communication

Tools

Azure

Microsoft 365

Entra ID

Intune

Windows Server

Linux

PowerShell

Python

Terraform

Job description

Are you the engineer everyone turns to when things get complicated?

We're a hands-on Managed Services Provider (MSP) working across Microsoft, Linux, cloud infrastructure, security, and automation.

We're looking for a technically strong Senior Systems Engineer who thrives on solving complex problems, delivering challenging projects, and improving infrastructure.

This isn't just another support role. We want someone who can think independently, take ownership of technical challenges, and deliver solutions from start to finish.

You'll work across a variety of client environments, balancing project delivery, complex escalations, cloud infrastructure, and security. If you enjoy figuring out how things work, getting to the root cause of difficult problems, and building better solutions, you'll fit right in.

What you'll be doing

Cloud, Infrastructure & Projects

Leading and delivering infrastructure projects, including Microsoft 365 migrations, Azure deployments, server upgrades, and cloud migrations.

Designing, implementing, and improving environments across Microsoft 365, Azure, AWS, Windows Server, and Linux.

Working with networking, virtualisation, backup, disaster recovery, and hybrid infrastructure.

Taking ownership of projects from technical planning through to implementation and handover.

Complex Troubleshooting & Escalations

Investigating and resolving challenging Level 3 issues across servers, networks, cloud platforms, identity, and security.

Identifying root causes and implementing permanent solutions rather than temporary fixes.

Acting as a technical escalation point while supporting the wider team and clients.

Providing hands‑on technical support when needed — we're an MSP, and everyone gets involved.

Investigating security alerts across Microsoft Defender XDR and other security platforms.

Administering and securing Microsoft 365, Entra ID, Intune, and Windows Server environments.

Developing PowerShell and Python scripts to automate tasks and improve efficiency.

Administering and troubleshooting Linux systems, including services, networking, and logs.

Identifying opportunities to improve security, reliability, and operational processes.

What we're looking for

We're interested in what you can do, not just what certifications you hold.

Ideally, you'll have:

Strong experience in a Senior Systems Engineer, Infrastructure Engineer, or Level 3 technical role.

Proven ability to independently deliver infrastructure and cloud projects.

Solid Microsoft 365, Azure, Entra ID, Intune, Active Directory, and Windows Server experience.

Excellent troubleshooting skills and a strong understanding of networking fundamentals.

Experience with virtualisation, backup, and disaster recovery.

Good security knowledge, particularly Microsoft Defender and incident investigation.

PowerShell scripting skills and an automation‑first mindset.

Linux administration experience and confidence working from the command line.

Strong communication skills and the ability to take ownership of technical outcomes.

Bonus points for: AWS, advanced Linux skills, KQL, SIEM, Terraform, Python, MSP experience, or a homelab you enjoy tinkering with.

The kind of engineer we're after

We're looking for someone who:

Owns problems rather than passing them around.

Enjoys complex challenges and doesn't give up when the obvious fixes don't work.

Thinks critically and wants to understand why something broke, not just get it working again.

Can deliver projects independently, from planning to completion.

Is naturally curious and enjoys learning, experimenting, and improving systems.

Takes pride in their work and builds reliable, secure, well‑documented solutions.

Interesting projects across cloud, infrastructure, security, and automation.

Exposure to diverse technologies and complex client environments.

Opportunities to take technical ownership and influence solutions.

A hands‑on environment where your skills and ideas make a real difference.

Room to grow your expertise in cloud, security, Linux, and automation.

Interested?

If you're a capable engineer who enjoys getting stuck into difficult technical problems, delivering quality projects, and working with a broad range of technologies, we'd love to hear from you.

Tell us about a challenging problem you've solved, a project you've delivered, or something you've built that you're proud of.

Unlock job insights

Hirer responsiveness Salary match Number of applicants

Your application will include the following questions:

• Which of the following statements best describes your right to work in Australia?
• What's your expected annual base salary?
• How many years' experience do you have as a systems engineer?
• How much notice are you required to give your current employer?
• Do you have experience using Microsoft Defender?