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System engineer

Sydney
Sestra People
System Engineer
Posted: 31 January
Offer description

St Leonards, Sydney
|
Hybrid – 4 days onsite

This is
not
a ticket-grinding, BAU firefighting role.

We're looking for a
Level 3 IT Systems / Network Engineer
who genuinely enjoys
building, designing and improving environments
, not just keeping the lights on.

This role is
~95% project-based
and suits someone who wants to leave things better than they found them.

You'll be working across
infrastructure uplift, site rollouts, cloud and network projects
, and major platform improvements in a complex hybrid environment.

If you're the kind of engineer who asks
"how should this be designed?"
rather than
"what broke?"
— keep reading.

What you'll be doing:

* Designing, implementing and improving
enterprise infrastructure
(on-prem & cloud)
* Leading and contributing to
IT projects and construction site rollouts
* Building and maintaining
network infrastructure
(LAN, WAN, Wireless, SD-WAN, Firewalls)
* Owning
Windows Server environments
— upgrades, capacity, availability and patching
* Supporting and enhancing
VMware and Citrix
platforms
* Administering and improving
Microsoft 365
(Entra ID, Intune, Defender, Purview, Exchange)
* Designing and testing
backup, DR and business continuity
solutions
* Working closely with security teams on architecture, policies and audit outcomes
* Producing high-quality
documentation and standards
* Mentoring junior engineers and lifting capability across the team

This is a role where you're trusted to
design solutions
, not just follow run books.

What you'll bring:

* 5+ years
experience in a complex
hybrid IT infrastructure environment
* Windows Server
* Networking
(TCP/IP, DNS, DHCP, switching, routing, firewalls)
* VMware & Citrix
* Microsoft 365
(Intune, Defender, Entra ID, Purview)
* Solid understanding of
LAN, WAN and Wireless networking
* Exposure to
cloud concepts and technologies (Azure)
* A proactive, self-driven mindset — you see gaps and improve them
* Confidence working at
Level 3
: designing, building, owning outcomes

Certifications (nice to have):

CCNA / CCNP, CompTIA Network+, MCSE, Microsoft role-based certifications

Why this role:

* Project-heavy
role with real ownership and impact
* Minimal BAU / reactive support
* Opportunity to shape and modernise environments
* Strong values-driven culture that genuinely invests in people
* Hybrid working (4 days onsite, Sydney)

The kind of person who thrives here:

* A
builder
, not a fixer
* Someone who enjoys
architecture, delivery and continuous improvement
* Comfortable taking initiative and being accountable
* Values teamwork, learning and doing things properly
* Leading incident response with a
sense of urgency
& willingness to roll up the sleeves
* Very strong communicator
* both written & verbal and comfortable managing C level stakeholders

This is a full time permanent role based in St Leonards, working hybrid flexibility (1 day from home per week).

If you are interested, apply today, or reach out directly to with an updated CV.

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Send an application
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