We are looking for an experienced L3/L4 Cloud & Linux Engineer with strong expertise in Enterprise Linux (RHEL/SLES) and deep hands‑on experience in Azure (AWS/GCP experience is also valued). If you enjoy solving complex infrastructure challenges, optimizing Linux performance, and working across hybrid & multi‑cloud environments, we’d love to hear from you.

Responsibilities

- Troubleshoot complex Linux OS, kernel, and performance issues
- Perform Root Cause Analysis (RCA) for critical incidents
- Optimize CPU, memory, disk, and network performance
- Design, deploy, and support cloud workloads (Azure/AWS/GCP)
- Support hybrid and multi‑cloud infrastructure
- Collaborate with Cloud, Network, Security, and Application teams
- Mentor junior engineers and contribute to technical documentation
- Participate in on‑call support and incident management
- Expert knowledge of RHEL and/or SUSE Linux Enterprise Server (SLES)




- Advanced Linux OS & kernel troubleshooting
- Performance analysis using top, vmstat, iostat, sar, netstat, perf, strace, tcpdump
- Robust hands‑on experience with Microsoft Azure (AWS/GCP experience is also welcome)
- Linux kernel tuning (sysctl, HugePages, memory & I/O optimization)
- Cloud networking: VNet/VPC, Load Balancers, DNS, NSGs/Security Groups, Firewalls

Nice to Have

- Bash, Python, or Perl scripting
- Terraform, ARM Templates, or CloudFormation
- Prometheus, Grafana, or Cloud-native monitoring
- ITIL experience
- RHCE/RHCSA and Azure/AWS/GCP Certifications
- Bachelor’s degree in Computer Science, Engineering, or equivalent
- 8+ years of IT experience in Linux & Cloud Infrastructure

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📌 Linux Engineer (City of Sydney)
🏢 CareCone Group
📍 City of Sydney