Take complete ownership of IT and infrastructure for a fast-growing technology business.

We're partnering with a rapidly scaling technology company where software, hardware and advanced engineering come together.

This is an opportunity for a hands-on infrastructure leader to take full ownership of the systems keeping the entire operation running, from complex networking, cloud and security through to the specialist infrastructure supporting engineering and production.

The business is growing quickly and needs someone who can bring structure, improve reliability and build an infrastructure environment capable of supporting that growth.

You'll have the autonomy to make technical decisions, shape the long-term infrastructure roadmap and build out the IT function as the business expands.

We're looking for someone with broad technical capability who has experience taking ownership of infrastructure across a business, rather than specialising in just one area.

What You'll Be Working On

- Networking: Own the design and operation of the network environment, including switching, routing, VLANs, firewalls, VPNs and network segmentation.
- Infrastructure: Manage Linux and Windows environments, servers, virtualisation, storage, backups and disaster recovery.
- Cloud: Support and improve AWS, DigitalOcean and on-premise infrastructure, with a focus on reliability, security and automation.
- Identity & Endpoints: Manage Microsoft Entra ID, Active Directory, SSO, MFA, device management and access controls.
- Security: Implement practical security controls, improve infrastructure security and support compliance requirements.
- Engineering Systems: Maintain the infrastructure supporting technical teams,



including compute resources, CI environments, storage and specialist equipment.
- Strategy & Ownership: Take responsibility for infrastructure planning, vendors, budgets, documentation and scaling the IT function.

Head of IT & Infrastructure | Sydney

Take complete ownership of IT and infrastructure for a fast-growing technology business.

We're partnering with a rapidly scaling technology company where software, hardware and advanced engineering come together.

This is an opportunity for a hands-on infrastructure leader to take full ownership of the systems keeping the entire operation running, from complex networking, cloud and security through to the specialist infrastructure supporting engineering and production.

The business is growing quickly and needs someone who can bring structure, improve reliability and build an infrastructure setting capable of supporting that growth.

You'll have the autonomy to make technical decisions, shape the long-term infrastructure roadmap and build out the IT function as the business expands.

We're looking for someone with broad technical capability who has experience taking ownership of infrastructure across a business, rather than specialising in just one area.

What You'll Be Working On

- Networking:



Own the design and operation of the network environment, including switching, routing, VLANs, firewalls, VPNs and network segmentation.
- Infrastructure: Manage Linux and Windows environments, servers, virtualisation, storage, backups and disaster recovery.
- Cloud: Support and improve AWS, DigitalOcean and on-premise infrastructure, with a focus on reliability, security and automation.
- Identity & Endpoints: Manage Microsoft Entra ID, Active Directory, SSO, MFA, device management and access controls.
- Security: Implement practical security controls, improve infrastructure security and support compliance requirements.
- Engineering Systems: Maintain the infrastructure supporting technical teams, including compute resources, CI environments, storage and specialist equipment.
- Strategy & Ownership: Take responsibility for infrastructure planning, vendors, budgets, documentation and scaling the IT function.

The key things we're looking for:

- Excellent networking fundamentals, including hands-on experience configuring switches, routing, firewalls, VLANs and troubleshooting network issues.
- Broad systems administration experience across Linux, Windows, virtualisation and storage.
- Strong Microsoft identity experience, including Entra ID, Active Directory and hybrid environments.
- Experience managing cloud infrastructure, ideally AWS, alongside on-premise systems.
- Scripting and infrastructure automation experience.
- Good security fundamentals across identity, access, endpoints and infrastructure.
- Experience working in a growing business where you've built, improved or taken ownership of syste

📌 Head of IT Infrastructure (Sydney)
🏢 The Onset Group
📍 Sydney