Senior Systems Administrator / IT Systems Engineer (Azure, Security, Intune & Networks)

• Full-time

Company Description

Partnering with parents and school communities, at Junior Adventures Group (JAG) our goal is to help today's children navigate their tomorrow by supporting children's development through play in fun, engaging environments. We live and breathe our company values every day by being considerate, passionate, courageous, and making a difference.

Our technology keeps everything running behind the scenes.We're evolving our IT environment to be more scalable, secure, and efficient- and we're looking for someone to help drive that forward.

Job Description

Shape the future of our technology environment

We're looking for an experienced Senior Systems Administrator or Infrastructure Engineer who thrives on solving complex technical challenges and driving meaningful change.

This isn't a traditional BAU support role. You'll play a key role in shaping and improving our infrastructure, security and cloud environment, leading projects that strengthen our technology capability and support business growth.

Working from our Camberwell office 3-4 days per week, you'll partner closely with the IT Operations Manager, act as a senior technical escalation point, mentor team members and help deliver a modern, secure and scalable technology environment.

What You'll Be Doing

Design, implement and support enterprise infrastructure across Microsoft Azure, Microsoft 365 and integrated SaaS platforms.

Manage and enhance cloud security, identity and endpoint management solutions including Entra ID, Conditional Access, Intune and Microsoft Defender.

Lead infrastructure, cyber security and technology improvement projects from design through to implementation and operational handover.

Design and support Azure Virtual Desktop (AVD) environments and associated technologies.

Maintain and optimise enterprise networking environments including Cisco Meraki, Ubiquiti, VPN and SD-WAN solutions.

Act as a senior technical escalation point, proactively identifying risks, resolving complex issues and driving continuous improvement.

Mentor junior team members and contribute to technical standards, documentation and operational best practices.

Participate in occasional after-hours work for planned critical changes (infrequent).

About You

You're an experienced infrastructure professional who enjoys taking ownership, leading initiatives and improving the way technology supports the business.

You'll bring:

5+ years' experience in a Senior Systems Administrator, Systems Engineer, Infrastructure Engineer or similar role.

A proactive mindset with the ability to identify opportunities, solve problems and drive outcomes.

Experience delivering infrastructure, cloud or security projects from planning through to implementation.

Strong stakeholder engagement, communication and documentation skills.

A passion for mentoring others and contributing to a high-performing team.

Qualifications

You will demonstrate strong technical experience with:

Microsoft Azure and Microsoft 365

Microsoft Entra ID and Conditional Access

Microsoft Intune and Endpoint Management

Microsoft Defender Security Suite

Cisco Meraki, Ubiquiti and enterprise networking

PowerShell automation and troubleshooting

Zero Trust security principles and modern cyber security practices

Mobile Device Management (MDM) and enterprise mobility environments

Desirable Certifications

Microsoft Certified: Azure Security Engineer Associate

Microsoft Certified: Identity and Access Administrator Associate

Cisco Meraki certifications

CompTIA Security+

CISSP

Why Join Us?

This role is ideal for a Senior Systems Administrator looking to broaden their project delivery, infrastructure and technical leadership experience. You'll have the opportunity to influence technology decisions, lead meaningful improvements and continue growing your capability within a modern cloud-first environment.

Additional Information

At Junior Adventures Group, child safety and child safeguarding principles are our top priorities. Our recruitment process includes thorough background checks and screenings to ensure the wellbeing of all children in our care.

We welcome individuals from all backgrounds, abilities, and identities, including Aboriginal and Torres Strait Islander people.

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