Senior Linux/Unix Server Administrator - OCI

Job Description:

Key Responsibilities

• 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.

Qualifications & Experience

• 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.

Certifications

• 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

Core Competencies

• 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.

At DXC Technology, we believe strong connections and community are key to our success. Our work model prioritizes in-person collaboration while offering flexibility to support wellbeing, productivity, individual work styles, and life circumstances. We’re committed to fostering an inclusive environment where everyone can thrive.

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