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About SUBCO With a proven track record of delivering transformative connectivity, SUBCO owns and operates critical submarine cable assets linking Australia to Asia, the Middle East, and beyond. Building on this foundation, a new 5,000 km domestic cable system connecting emerging digital hubs across Australia is set to go live in 2026, marking a major milestone in SUBCOs evolution. As demand for highcapacity, resilient infrastructure accelerates, SUBCO is entering a strategic growth phase of major scaleup, actively pursuing global opportunities to deliver innovative connectivity solutions that meet the needs of cloud, content, and AIdriven enterprises. Our Values At SUBCO, our values are the foundation of everything we do. They shape our culture, guide our decisions, and define how we interact with our customers, partners, and each other. From being Customer Obsessed to always Raising the Bar, we are committed to innovation and excellence. Together, we are a team of Trailblazers who Grow Together and hold ourselves accountable, ensuring that We Each Set the Standard for success. These values aren''t just words they drive us forward every day. About Our Role We are looking for an experienced Principal Infrastructure Engineer with a strong background in onpremise environments to join our IT operations team. This role is responsible for the design, deployment, management, and support of critical infrastructure systemsincluding servers, virtualization platforms, networking, storage, and compute resources hosted within onsite data centres or colocated facilities. Key Responsibilities Maintain, monitor, and optimise SUBCO''s onpremises server environments (compute, storage, networking) supporting critical systems that underpin international submarine cable operations. Implement security hardening, patching, and lifecycle management of physical and virtual server assets. Administer identity and access management systems for onpremises environments. Optimise infrastructure costs and manage budgets effectively. Manage hardware lifecycle including refresh cycles and endoflife equipment planning. Lead automation of provisioning, configuration, and patching using infrastructureascode and orchestration tools. Design, deploy, and manage AWS infrastructure aligned with SUBCO''s network technology platforms, ensuring scalability, resilience, and compliance. Support the design and deployment of cloud infrastructure using IaC. Reliability & Operations Support Implement monitoring of system health, alerting, and observability across onprem and cloud environments to ensure high availability of critical digital infrastructure. Troubleshoot and resolve incidents impacting SUBCO''s operational systems, collaborating closely with the NOC and network engineering teams, including participation in oncall rotation. Ensure backup, disaster recovery, and business continuity plans are in place and tested. Conduct performance tuning and optimisation of infrastructure components. Security & Compliance Ensure security standards, access controls, and compliance frameworks are applied consistently across hybrid infrastructure. Support audits, disaster recovery testing, and cyberresilience initiatives critical for a trusted subsea operator. Work closely with security teams to ensure compliance with internal and external regulations. Lead or contribute to infrastructure projects and communicate technical concepts to stakeholders. Partner with network engineers, software developers, and operations teams to deliver infrastructure that supports automation, orchestration, and AI/analytics initiatives. Evaluate and adopt new technologies to improve performance, reduce cost, and increase efficiency in a hybrid cloud/server environment. Automate infrastructure operations using configuration management and scripting tools. Manage vendor relationships and support contracts for hardware and software. Maintain detailed documentation of systems, configurations, and procedures. Contribute to hybrid infrastructure solutions spanning both onpremises and cloud environments. Follow change management processes and industry best practices. About You Experience in Infrastructure or Systems Engineering, with strong background in managing physical/virtual servers, storage, networking, and hardware lifecycles. Proficient in virtualization (VMware, HyperV, KVM, Nutanix), container platforms, and orchestration technologies. Skilled in designing, deploying, and managing AWS cloud infrastructure, hybrid environments, and InfrastructureasCode (Terraform, CloudFormation, CDK). Strong Linux/Windows commandline, automation, and configuration management (Ansible, Puppet, PowerShell); experience with CI/CD tools (GitHub Actions, GitLab CI, Jenkins). Knowledge of databases (SQL Server, PostgreSQL, MySQL, Oracle), identity management (Active Directory, LDAP, federation), and enterprise networking (firewalls, load balancers, VLANs, VPNs, direct connect). Familiarity with SAN/NAS storage (NetApp, Dell EMC, Synology), backup/recovery, clustering, highavailability, and disaster recovery planning. Experienced in monitoring and observability (Prometheus, Grafana, Zabbix, Nagios) and performance/capacity planning. Strong understanding of IT security best practices, compliance, and operating in secure or regulated environments (finance, defence, healthcare). Skilled in troubleshooting, root cause analysis, change management (ITIL), and leading/contributing to infrastructure projects. Strong communication skills for both technical and nontechnical stakeholders; comfortable with oncall support. Industry certifications (e.g., VMware VCP, RHCE, MCSE, CompTIA Server+/Network+) highly regarded. Seniority Level MidSenior level Employment Type Fulltime Job Function Information Technology Location & Salary Brisbane, Queensland, Australia A$94,563.00A$105,910.00 Referrals increase your chances of interviewing at SUBCO by 2. #J-18808-Ljbffr