Linux System Administrator

Systems Limited; Punjab; Sur place; PKR 1 800 000 - 2 400 000; Plein temps

Résumé du poste

iSystems Ltd. seeks an experienced Infrastructure & Platforms Engineer to administer and automate enterprise Linux environments with focus on RHEL, Satellite, and Ansible. The role covers patching, security, lifecycle management, and automation across production, non-production, and DR setups.

You will manage virtualization, storage, backup, networking, and related enterprise infra technologies, and participate in on-call support as needed.

Qualifications

• Bachelor’s degree required in CS/IT/Engineering or related discipline.
• 5+ years of relevant enterprise infrastructure/Linux administration experience.
• Strong hands-on experience with RHEL 7/8/9 or later.
• Strong expertise in Linux system administration and troubleshooting.
• Hands-on experience with Red Hat Satellite (Content Views, Lifecycle Environments, Activation Keys, repos, registrations, errata).
• Strong practical experience with Ansible and development of playbooks, roles, inventories, templates, handlers.
• Experience with Ansible Automation Platform / Ansible Tower/AWX is preferred.
• Good knowledge of LVM, filesystems, systemd, SELinux, SSH, RPM/YUM/DNF, NFS, DNS/NTP, Linux networking, Bash scripting.
• Experience with Linux security hardening, vulnerability remediation, and OS performance monitoring.
• Hands-on experience with VMware vSphere/ESXi; Hyper-V is a plus.
• Understanding of SAN/NAS, Fibre Channel, LUNs, multipathing, NFS.
• Experience with backup technologies (Commvault, Veeam).
• Exposure to Red Hat OpenShift/Kubernetes is an advantage.
• Strong troubleshooting, analytical, communication, documentation, and problem-solving skills.
• Ability to work independently and collaborate with cross-functional teams.
• Willingness to participate in on-call and after-hours support.
• RHCSA/RHCE, Red Hat Ansible Automation, VMware VCP, or ITIL certifications preferred.

Responsabilités

• Administer and support enterprise RHEL environments across production, non-production, and DR platforms.
• Perform Linux installation, configuration, patching, upgrades, hardening, performance tuning, and troubleshooting.
• Manage Linux users, groups, filesystems, LVM, services, SSH, SELinux, and system security.
• Manage RHEL lifecycle using Red Hat Satellite: host registration, repositories, Content Views, environments, keys, errata, subscriptions.
• Plan and execute enterprise Linux patching, remediation, and compliance via Satellite.
• Develop and maintain Ansible playbooks, roles, inventories, templates, and handlers for automation.
• Automate server provisioning, configuration management, and routine operational tasks with Ansible.
• Support and troubleshoot Ansible Automation Platform / Tower/AWX environments and failed jobs.
• Troubleshoot complex Linux OS, networking, filesystem, performance, and infrastructure issues.
• Support Linux HA/cluster environments and related technologies.
• Administer and troubleshoot VMware vSphere/ESXi environments: VM provisioning, migration, snapshots, HA.
• Support SAN/NAS storage: Fibre Channel, LUNs, multipathing, NFS.

Connaissances

RHEL

Linux troubleshooting

Ansible

OpenShift/Kubernetes

Networking (TCP/IP, DNS, NTP)

Scripting (Bash)

On-call support

RHCSA/RHCE

Formation

Bachelor’s degree in Computer Science, IT, Engineering, or a related discipline

Outils

Red Hat Satellite

Ansible Tower/AWX

VMware vSphere/ESXi

OpenShift

Commvault

Veeam

Description du poste

The Infrastructure & Platforms Engineer will be responsible for administering, automating, and supporting enterprise Linux and infrastructure environments, with a primary focus on RHEL, Red Hat Satellite, and Ansible Automation. The role will ensure the availability, security, performance, patching, and lifecycle management of Linux platforms across production, non-production, and DR environments while supporting virtualization, storage, backup, networking, and other enterprise infrastructure technologies.

Responsibilities

• Administer and support enterprise RHEL environments across production, non-production, and DR platforms.
• Perform Linux installation, configuration, patching, upgrades, hardening, performance tuning, and troubleshooting.
• Manage Linux users, groups, filesystems, LVM, services, processes, permissions, SSH, SELinux, and system security.
• Manage the RHEL lifecycle using Red Hat Satellite, including host registration, repositories, Content Views, Lifecycle Environments, Activation Keys, errata, and subscription management.
• Plan and execute enterprise Linux patching, remediation, and compliance activities through Satellite.
• Develop and maintain Ansible playbooks, roles, inventories, variables, templates, and handlers for infrastructure automation.
• Automate server provisioning, configuration management, patching, compliance, application prerequisites, and routine operational activities using Ansible.
• Support and troubleshoot Ansible Automation Platform / Ansible Tower/AWX environments and failed automation jobs.
• Troubleshoot complex Linux OS, networking, filesystem, performance, and infrastructure-related issues.
• Support Linux HA/cluster environments and related technologies where applicable.
• Administer and troubleshoot VMware vSphere/ESXi environments, including VM provisioning, migration, snapshots, resource management, and HA.
• Support enterprise SAN/NAS storage, including Fibre Channel, LUNs, multipathing, NFS, and storage provisioning.
• Support enterprise backup and recovery environments using Commvault, Veeam, or equivalent technologies.
• Participate in infrastructure migration, technology refresh, DR, capacity planning, and platform upgrade projects.
• Monitor infrastructure health, availability, capacity, and performance.
• Perform root-cause analysis and implement permanent solutions for recurring infrastructure issues.
• Coordinate with OEM and vendor support teams for Linux, hardware, virtualization, storage, backup, and platform-related issues.
• Maintain infrastructure documentation, SOPs, technical procedures, and operational runbooks.
• Participate in incident, problem, change, and release management processes.
• Provide technical support during critical production activities and planned maintenance.

Requirements

• Bachelor’s degree in Computer Science, IT, Engineering, or a related discipline.
• 5+ years of relevant experience in enterprise infrastructure and Linux administration.
• Strong hands‑on experience with RHEL 7/8/9 or later.
• Strong expertise in Linux system administration and troubleshooting.
• Hands‑on experience with Red Hat Satellite, including Content Views, Lifecycle Environments, Activation Keys, repositories, host registration, errata, and patch management.
• Strong practical experience with Ansible and development of playbooks, roles, inventories, variables, templates, and handlers.
• Experience with Ansible Automation Platform / Ansible Tower/AWX is preferred.
• Good knowledge of LVM, filesystems, systemd, SELinux, SSH, RPM/YUM/DNF, NFS, DNS/NTP, Linux networking, user/access management, and Bash scripting.
• Experience with Linux security hardening, vulnerability remediation, and OS performance monitoring.
• Hands‑on experience with VMware vSphere/ESXi; exposure to Hyper‑V is an advantage.
• Good understanding of enterprise SAN/NAS, Fibre Channel, LUNs, multipathing, and NFS.
• Experience with Commvault, Veeam, or equivalent backup technologies and understanding of backup, recovery, DR, RPO, and RTO concepts.
• Good understanding of TCP/IP, DNS, NTP, VLANs, routing, firewalls, load balancing, and Linux network configuration.
• Exposure to Red Hat OpenShift/Kubernetes is an advantage.
• Strong troubleshooting, analytical, communication, documentation, and problem‑solving skills.
• Ability to work independently and collaborate with cross‑functional infrastructure and application teams.
• Willingness to participate in on‑call and after‑hours support when required.
• RHCSA/RHCE, Red Hat Ansible Automation, VMware VCP, or ITIL certification is preferred.