Senior Systems Administrator (Infrastructure Engineer)

At Centorrino Technologies (CT), we’re more than just tech—we’re a community that goes beyond expectations. We’ve been recognised as a Great Place to Work in 2024-2025 and one of the Best Places to Work Medium & Large Size in Australia for 2025, with an outstanding eNPS score of 68. And we’re not stopping there.

We are seeking an experienced Senior Systems Administrator (Infrastructure Engineer) to support the design, deployment, and ongoing management of secure, enterprise-scale infrastructure environments. This role is ideal for professionals with strong Linux systems administration expertise, experience across virtualised and cloud environments, and a passion for automation and continuous improvement. You'll work as part of a collaborative technical team to deliver resilient, high-performing infrastructure that supports critical systems and services. This role is a 12-month contract based on-site in Canberra, ACT.

Requirements

What You'll Do

• Lead the installation, configuration, maintenance, and lifecycle management of enterprise infrastructure and platforms.
• Manage and optimise Linux-based systems across on-premises and cloud environments.
• Design, deploy, and administer VMware and VMware Aria environments.
• Develop and maintain infrastructure automation and configuration management using modern tooling and best practices.
• Deploy and support Kubernetes, Docker, and virtualised environments across multiple platforms.
• Configure, troubleshoot, and maintain networking components, including VLANs, DNS, load balancers, and firewall rules.
• Deploy developer and analyst tooling, including IDEs, package management solutions, and access controls.
• Build and maintain isolated or sandboxed environments for secure testing and analysis.
• Collaborate with system administrators, software developers, and technical stakeholders to improve infrastructure performance and operational processes.
• Mentor team members, contribute to technical design reviews, and provide expert advice on infrastructure solutions.

What You'll Bring

• Extensive experience in Linux systems administration across both on-premises and cloud environments.
• Strong expertise in VMware and VMware Aria, including design, deployment, administration, and lifecycle management.
• Hands-on experience with containerisation technologies such as Docker and Kubernetes.
• Solid networking knowledge, including configuring and troubleshooting VLANs, DNS, load balancers, and firewall rules.
• Experience deploying developer environments, package management tools, and implementing secure access controls.
• Demonstrated experience designing and supporting sandboxed or isolated environments.
• Strong automation and scripting skills, with experience using configuration management and infrastructure-as-code tools.
• Excellent problem-solving, communication, and stakeholder engagement skills.
• Ability to work independently while contributing effectively within a collaborative technical team.
• Current TSPV (Top Secret Positive Vetting) security clearance is required

Benefits

Why You'll Love Working Here:

Our company is more than just a workplace, it's a hub of inspiration and creativity where employees love to work! Here's why:

• Extensive training and development opportunities that enable continual growth as part of your career planning.
• Extensive discounts and benefits to maximise your money.
• A choice of your IT equipment to maximise your success and access to cost-price tech for your personal needs.
• Fun team events to celebrate achievements and connect with colleagues outside work as part of our engaging culture.

CT celebrates diversity and enables every voice to be heard as we drive to create the world we want. Apply today and be part of a team that values innovation, inclusivity, variety and diverse backgrounds.

Note: A valid Vulnerable People / Working with Children Check (WWCC) and Police Check are required.