{"id":1538014,"url":"https://alion.io/job/dxc-technology-oracle-cloud-infrastructure-server-os-administrator","title":"Oracle Cloud Infrastructure Server OS Administrator","company":{"id":88,"name":"DXC Technology","domain":"dxc.com","url":"https://alion.io/company/dxc-technology","size_band":"5000+","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":79,"open_postings":109,"ghost_share":0,"stale_share":0.844,"repost_share":0.009,"time_to_fill_p50_days":22,"computed_at":"2026-10-05T05:45:15Z"}},"role":"DevOps","role_family":"DevOps","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Cairo, Egypt"],"countries":["EG"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":57000,"max_usd":147000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":2444},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Active Directory","optional":false},{"name":"Ansible","optional":false},{"name":"Bash","optional":false},{"name":"Chef","optional":false},{"name":"CI/CD","optional":false},{"name":"CIS Benchmarks","optional":false},{"name":"Configuration Management","optional":false},{"name":"Datadog","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"Grafana","optional":false},{"name":"Incident Management","optional":false},{"name":"ISO 27001","optional":false},{"name":"ITSM","optional":false},{"name":"Linux","optional":false},{"name":"Microsoft Defender","optional":false},{"name":"Oracle","optional":false},{"name":"PCI DSS","optional":false},{"name":"PowerShell","optional":false},{"name":"Prometheus","optional":false},{"name":"Puppet","optional":false},{"name":"Python","optional":false},{"name":"Red Hat","optional":false},{"name":"ServiceNow","optional":false},{"name":"SOC 2","optional":false},{"name":"Terraform","optional":false},{"name":"Vault","optional":false},{"name":"VPN","optional":false},{"name":"Windows","optional":false},{"name":"Windows Server","optional":false},{"name":"Docker","optional":true},{"name":"ITIL","optional":true},{"name":"Podman","optional":true},{"name":"SaltStack","optional":true}],"status":"live","first_seen_at":"2026-09-30T19:40:39Z","employer_posted_date":"2026-09-30","last_verified_at":"2026-10-06T01:59:44Z","board_verified":true,"closed_at":null,"days_open":5,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":5},"description":"Job Description:\nRole Summary\nWe are seeking a Senior Server OS Administrator with deep expertise in managing Oracle Linux, Red Hat Enterprise Linux (RHEL), and Windows Server operating systems across Oracle Cloud Infrastructure (OCI) and hybrid environments. This role is responsible for OS provisioning, hardening, patching, performance tuning, automation, and compliance ensuring enterprise compute workloads operate with maximum availability, security, and operational efficiency on OCI.\nKey Responsibilities\nOCI Compute & Instance Management\nProvision and manage OCI compute instances (VM, Bare Metal, Flex shapes) across Oracle Linux, RHEL, and Windows Server platforms.\nConfigure and manage OCI instance metadata, cloud-init scripts, and custom images for standardized OS deployments.\nBuild and maintain golden images (custom images, image pipelines) for Oracle Linux, RHEL, and Windows Server on OCI.\nManage instance pools, autoscaling configurations, and capacity reservations for dynamic workload demands.\nConfigure OCI boot/block volumes, volume groups, backup policies, and cross-region replication for OS-level storage.\nManage OCI Bastion service and OS Management Hub for secure access and fleet management.\nOracle Linux & RHEL Administration\nInstall, configure, and manage Oracle Linux (8.x/9.x) and RHEL (8.x/9.x) across OCI and on-premises environments.\nAdminister kernel parameters, sysctl tuning, Huge Pages, NUMA, and kernel-level performance optimization.\nManage package management using DNF/YUM, ULN (Unbreakable Linux Network), and Oracle Linux Manager/Spacewalk.\nConfigure and maintain LVM, filesystems (ext4, XFS, OCFS2), multipath, and iSCSI storage at the OS layer.\nAdminister systemd services, cron scheduling, and process management.\nManage Oracle Ksplice for zero-downtime kernel patching on Oracle Linux.\nConfigure SELinux policies, firewalld rules, and iptables/nftables for OS-level security.\nWindows Server Administration\nInstall, configure, and manage Windows Server (2019/2022/2025) on OCI compute instances.\nAdminister Active Directory Domain Services (AD DS), Group Policy Objects (GPOs), DNS, and DHCP in OCI-hosted or hybrid-connected Windows environments.\nManage Windows Server roles and features: IIS, File Server, Print Server, WSUS, and Failover Clustering.\nConfigure and manage Windows Remote Desktop Services (RDS) and Windows Admin Center.\nAdminister Windows storage: Storage Spaces, ReFS, NTFS permissions, and iSCSI initiators.\nManage Windows Update for Business, WSUS, and patch compliance across OCI-hosted Windows fleets.\nConfigure Windows Defender, Windows Firewall with Advanced Security, and security baselines.\nOS Patching & Lifecycle Management\nDesign and execute OS patching strategies across Oracle Linux, RHEL, and Windows Server using OCI OS Management Hub.\nManage patching schedules, patch compliance reporting, and exception handling across development, staging, and production environments.\nImplement zero-downtime patching workflows using Oracle Ksplice (Linux) and live patching techniques.\nMaintain OS lifecycle compliance track end-of-life, extended support, and upgrade paths across all supported OS versions.\nCoordinate patching windows with application and database teams, ensuring rollback readiness and change management alignment.\nSecurity Hardening & Compliance\nApply CIS benchmarks for Oracle Linux, RHEL, and Windows Server across all managed instances.\nImplement OS-level encryption: LUKS (Linux), BitLocker (Windows), and OCI Vault integration for key management.\nConfigure and manage SSH hardening, PAM modules, sudoers policies, and certificate-based authentication (Linux).\nManage local and domain-based access controls, privilege escalation policies, and service account governance.\nImplement audit logging using auditd (Linux), Windows Event Forwarding (WEF), and OCI Logging integration.\nSupport compliance frameworks (SOC2, ISO 27001, PCI-DSS, CIS) through evidence collection and remediation at the OS layer.\nNetworking & OS-Level Connectivity\nConfigure OCI VNIC attachments, secondary VNICs, and OS-level network interface bonding/teaming.\nManage OS-level DNS resolution, NTP/Chrony configuration, and host-based routing on OCI instances.\nConfigure OS-level firewall rules aligned with OCI Security Lists and NSGs.\nTroubleshoot OS-level network issues including MTU, TCP tuning, and latency across OCI VCN topologies.\nConfigure and manage VPN client connectivity and proxy settings for hybrid environments.\nPerformance Monitoring & Tuning\nMonitor OS performance metrics (CPU, memory, I/O, network) using OCI Monitoring Agent, OS Management Hub, and native OS tools (sar, vmstat, iostat, perfmon).\nTune OS-level parameters for database, middleware, and application workloads including shared memory, semaphores, file descriptors, and kernel limits.\nImplement and manage OCI Compute metrics, custom alarms, and notifications for OS-level health monitoring.\nConduct capacity planning and resource utilization analysis to inform scaling and right-sizing decisions.\nIntegrate with enterprise monitoring stacks (Prometheus, Grafana, Datadog, SCOM) for unified observability.\nAutomation & Infrastructure as Code\nDevelop and maintain OS automation using Ansible, Terraform (OCI provider), and OCI Resource Manager.\nBuild automated OS provisioning pipelines golden image creation, cloud-init bootstrapping, and post-provisioning configuration.\nAutomate routine OS tasks: user management, log rotation, disk cleanup, certificate renewals, and compliance checks using Bash, Python, and PowerShell.\nImplement configuration management and drift detection using Ansible, Puppet, or Chef across managed fleets.\nBuild self-service OS provisioning workflows integrated with CI/CD pipelines and ServiceNow ITSM.\nGeneral\nDevelop and maintain operational runbooks, SOPs, and knowledge base articles for OS administration procedures.\nParticipate in on-call rotations, incident management, root cause analysis, and problem management.\nCollaborate with cloud architects, DBA teams, middleware teams, and client stakeholders on platform decisions.\nMentor junior OS administrators and contribute to knowledge sharing within the practice.\nRequired Skills & Experience\n8-10 years of progressive experience in server OS administration with hands-on expertise across Oracle Linux, RHEL, and Windows Server.\nStrong experience managing OS workloads on OCI (Compute instances, custom images, OS Management Hub).\nExpert-level knowledge of Linux administration: kernel tuning, LVM, filesystems, package management, systemd, SELinux, and firewalld.\nExpert-level knowledge of Windows Server administration: Active Directory, GPO, IIS, Failover Clustering, and Windows security baselines.\nProven experience designing and executing enterprise OS patching strategies across mixed Linux/Windows fleets.\nStrong proficiency in OS automation using Ansible and at least one scripting language: Bash, Python, or PowerShell.\nHands-on experience with Infrastructure as Code (Terraform with OCI provider) for compute provisioning.\nSolid understanding of OCI networking: VCNs, subnets, NSGs, VNICs, and service gateways as they relate to OS-level configuration.\nExperience applying CIS benchmarks and security hardening across Linux and Windows platforms.\nExcellent communication skills with the ability to produce clear operational documentation and engage with cross-functional teams.\nPreferred Skills\nOracle certifications: Oracle Linux System Administrator (OCA/OCP), OCI Architect Associate, OCI Operations Associate.\nRed Hat certifications: RHCSA, RHCE.\nMicrosoft certifications: Windows Server Hybrid Administrator Associate (AZ-800/AZ-801).\nExperience with Oracle Ksplice for zero-downtime kernel patching.\nFamiliarity with OCI OS Management Hub and Oracle Linux Manager at scale.\nExperience with configuration management tools: Puppet, Chef, or SaltStack.\nKnowledge of container runtimes (Podman, Docker) and container host OS management on OCI.\nExperience with enterprise monitoring: Prometheus, Grafana, Datadog, SCOM, or OEM.\nFamiliarity with ITSM integration (ServiceNow) for automated provisioning and change management.\nITIL Foundation or equivalent service management awareness.\nExperience working in managed services or consulting delivery environments.\nAt 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.\nRecruitment fraud is a scheme in which fictitious job opportunities are offered to job seekers typically through online services, such as false websites, or through unsolicited emails claiming to be from the company. These emails may request recipients to provide personal information or to make payments as part of their illegitimate recruiting process. DXC does not make offers of employment via social media networks and DXC never asks for any money or payments from applicants at any point in the recruitment process, nor ask a job seeker to purchase IT or other equipment on our behalf. 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