System Administrator- L2/L3

🗓️ Full-time | Permanent | Start ASAP

📍 Sydney preferred / Australia-wide remote or hybrid

🏡 Hybrid working

About Sharon AI

Sharon AI is building the infrastructure powering the next generation of artificial intelligence.

Operating across high-performance GPU compute and AI infrastructure, we are focused on delivering reliable, scalable and secure solutions that support advanced AI workloads.

As Sharon AI continues to grow, we’re looking for System Administrators across L2 and L3 experience levels to join our Infrastructure Operations team and support the reliability and performance of our AI compute environments.

The Role

In this opportunity, you’ll deploy, administer and troubleshoot physical and virtual infrastructure supporting AI, ML and HPC workloads. We welcome both L2 administrators ready to broaden their skills and experienced L3 specialists who can take ownership of complex incidents and technical challenges. Responsibilities will be aligned to your experience.

You’ll work closely with infrastructure, data centre and technical operations teams, with exposure to large-scale GPU infrastructure and high-performance AI environments.

The role reports to the Head of Operations and collaborates with specialists across the business.

Sydney is preferred, with Australia-wide remote or hybrid arrangements available.

What You’ll Be Doing

• Install, configure, maintain and troubleshoot Linux production systems.

• Rack, stack and cable servers, networking and storage equipment in data centres.

• Administer KVM/libvirt virtualisation environments and supporting compute workloads.

• Deploy, operate and troubleshoot containers and Kubernetes clusters.

• Support DNS, routing, firewalls and network diagnostics.

• Maintain high-speed and clustered storage platforms and resolve server, GPU and hardware faults.

• Apply security patches, manage system configuration and support PKI/TLS and encryption controls.

• Monitor availability, performance and system health, identifying opportunities to improve reliability.

• Collaborate with technical teams to resolve incidents and optimise AI and HPC infrastructure; at L3 level, lead complex escalations, root-cause analysis and technical improvements.

What We’re Looking For

• Around 5-7+ years’ experience in systems administration, cloud infrastructure or technical operations; applications are welcome from both L2 and L3 professionals.

• Strong Linux administration skills and sound foundations in networking, virtualisation and hardware.

• Ability to diagnose technical issues methodically across physical and virtual environments, with senior candidates able to independently resolve complex escalations.

• Good communication, attention to detail and a collaborative approach.

• A proactive, collaborative approach, with an interest in growing technical capability or mentoring others at a senior level.

Nice to have:

• Kubernetes and KVM/libvirt administration experience.

• Experience in HPC, GPU infrastructure or cloud compute environments.

• Relevant qualifications or certifications such as RHCSA, CKA or AWS/Azure.

You don’t necessarily need to tick every box. If you have strong foundations, are curious and excited about what we’re building, we’d still love to hear from you.

Why Join Sharon AI?

You’ll be joining a rapidly growing Australian technology business at an exciting stage of its journey, with the opportunity to work directly with the infrastructure and technology powering the next generation of AI.

🏡 Hybrid working – flexibility between our office and working from home

🎂 Birthday leave – take some extra time to celebrate your day

🧠 Employee Assistance Program (EAP) – confidential support when you need it

🤖 Exposure to AI and next-generation technology – work in one of the fastest-moving areas of technology

📈 Career growth – genuine opportunities to grow your responsibilities as Sharon AI continues to scale

🌏 Growing global business – be part of an Australian technology company with an expanding international footprint

💡 Make an impact – join at a stage where your work can have a visible influence on how we build and grow

🤝 Collaborative culture – work alongside talented people across technical, commercial and corporate teams

Sound Like You?

Whether you’re an L2 System Administrator looking to take the next step or an experienced L3 professional ready to own complex infrastructure challenges, we’d love to hear from you. Join us in supporting the compute infrastructure behind advanced AI workloads.

Apply today and help us build the infrastructure powering the next generation of AI.

Due to the high volume of applications we receive, we’re unfortunately not always able to provide individual feedback to unsuccessful candidates. We appreciate your understanding and want to assure you that every application will be reviewed with care.