Senior LinuxUnix Server Administrator OCI

Job Description:

• Install configure and administer Linux/Unix servers (RHEL Oracle Linux CentOS AIX Solaris) across physical virtual and cloud environments.
• Manage IaaS instances on OCI including Compute Block Storage Virtual Cloud Networks (VCN) and associated networking constructs.
• Perform OS patching upgrades kernel tuning and lifecycle management in line with client change management processes.
• Administer logical volume management (LVM) filesystem layouts NFS/SMB mounts and storage provisioning.
• Configure and maintain high-availability and disaster recovery solutions (clustering failover replication).

• Provision and manage OCI Compute instances including Bare Metal VM Shapes and Dedicated VM Hosts.
• Configure OCI networking components: VCN subnets security lists network security groups load balancers and FastConnect/VPN.
• Manage OCI Identity and Access Management (IAM) compartments policies and tenancy governance.
• Implement and manage OCI Block Volume File Storage and Object Storage for workload requirements.
• Monitor and optimise OCI resource utilisation costs and performance via OCI Monitoring Logging and Alarms.

• Develop and maintain automation scripts using Shell (Bash/Ksh) Python or Ansible for provisioning configuration management and routine operations.
• Leverage OCI CLI Terraform and/or OCI Resource Manager for infrastructure-as-code deployments.
• Integrate with ITSM tooling (ServiceNow or equivalent) for incident change and problem management workflows.

• Apply OS-level security hardening (CIS benchmarks SELinux/AppArmor firewall rules PAM configuration).
• Manage user accounts RBAC SSH key infrastructure and privileged access in line with least-privilege principles.
• Support audit and compliance activities including log management vulnerability remediation and evidence collection.

• Monitor system health capacity and performance using tools
• Act as L2/L3 for infrastructure incidents; lead root cause analysis and drive resolution within SLA.
• Produce operational reports runbooks and technical documentation for managed platforms.

• 5 years of hands-on Linux/Unix server administration in an enterprise or managed services environment.
• Deep expertise in Red Hat Enterprise Linux (RHEL) or Oracle Linux; proficiency in at least one additional Unix variant (AIX Solaris HP-UX).
• Strong understanding of TCP/IP networking DNS DHCP NFS and enterprise storage protocols (iSCSI FC).
• Proven scripting skills in Bash Python or Perl for automation and operational tasks.
• Experience with enterprise virtualisation platforms (VMware vSphere KVM OVM).
• Familiarity with ITIL-aligned service delivery processes (Incident Change Problem Management).
• Strong analytical and troubleshooting skills with the ability to work independently under pressure.
• Excellent written and verbal communication skills for client-facing engagement.

• Hands-on experience with Oracle Cloud Infrastructure (OCI) Compute Networking Storage IAM.
• Exposure to Oracle Engineered Systems: Exadata Oracle Database Appliance (ODA) or SPARC SuperCluster.
• Infrastructure-as-Code experience: Terraform Ansible OCI Resource Manager.
• Experience in a professional services / managed services delivery model with multiple concurrent client engagements.

• Oracle Cloud Infrastructure Foundations Associate (1Z0-1085)
• Oracle Cloud Infrastructure Architect Associate or Professional (1Z0-1072 / 1Z0-1067)
• Red Hat Certified System Administrator (RHCSA) or Red Hat Certified Engineer (RHCE)
• Oracle Linux System Administrator (1Z0-100)
• ITIL Foundation v4

• Client Focus proactively manages expectations and builds trusted relationships with client technical teams.
• Problem Solving systematic approach to diagnosing complex infrastructure issues with minimal guidance.
• Collaboration works effectively within multi-disciplinary delivery teams across time zones.
• Accountability takes ownership of outcomes and maintains quality standards under delivery pressure.
• Continuous Improvement identifies and implements process improvements to reduce toil and improve reliability.

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