Linux/Unix Infrastructure Engineer

About the role

Infosys is seeking an experienced Linux/Unix Infrastructure Engineer to lead server operations for a Sydney‑based customer environment. You will be responsible for the full lifecycle of RHEL, Solaris and AIX systems, ensuring high availability and performance across physical, virtual and cloud workloads.

Key responsibilities

• Lead Linux/Unix server operations including build, run, patching, monitoring and lifecycle management.
• Own RHEL, Solaris and AIX activities such as user/group management, filesystem/LVM, services, package management, kernel/OS patching and performance tuning.
• Coordinate support for physical, virtual (VMware/ESX) and cloud (AWS, Azure, GCP, OCI) workloads.
• Oversee 24x7 monitoring, incident, change, problem, service request, asset/configuration and availability management.
• Drive patch planning, validation, vulnerability remediation, rollback planning and risk tracking.
• Support critical incidents, root‑cause analysis, corrective actions and major changes during business‑critical windows.
• Maintain ServiceNow/CMDB accuracy, server inventory, SOPs, runbooks and knowledge articles.
• Prepare shift rosters, ensure 24x7 coverage and lead governance forums with stakeholders.
• Train L1/L2/L3 colleagues on operational procedures, automation scripts and runbooks.
• Drive automation for health checks, patch reporting, log collection and self‑healing using Ansible, Jenkins, GitHub or equivalent tools.

Required profile

• Strong analytical and troubleshooting skills with ownership of P1/P2 incidents.
• Excellent verbal and written communication for interaction with customers, tower leads and offshore teams.
• Ability to identify service improvements, automation opportunities and knowledge reuse.
• Willingness to learn new technologies quickly and adapt to transition needs.

Required skills

• Linux administration (RHEL), Unix administration (Solaris/AIX), shell scripting.
• Server build/support, patching, incident/change/problem management.
• Performance monitoring, troubleshooting, VMware/ESX, Windows interoperability.
• Automation tools: Ansible, Terraform, Jenkins, GitHub.
• Monitoring tools: Nagios, ELK, OpenNMS, Splunk.
• ServiceNow ITSM/CMDB, cloud platforms (AWS, Azure, GCP, OCI), container platforms.
• Good to have: Red Hat OpenShift, Satellite/patch tooling.