Linux OS System Administrator

Müller`s Solutions; Dammam; On-site; SAR 180,000 - 320,000; Full time

Job summary

Müller’s Solutions seeks an experienced Linux systems administrator to provide 24/7 support for RHEL server environments, including Pacemaker clusters and SAP on Linux. Responsibilities include installation, configuration, maintenance, monitoring, patching, and security hardening according to security regs.

You will collaborate with ERP, application, database, and hosting teams, manage backups, logs, and DR activities, and ensure vendor recommendations and cybersecurity standards are followed.

Qualifications

• Experience with RHEL server administration and maintenance.
• Knowledge of SAP environments on Linux.
• Understanding of security best practices in Linux (firewalls, permissions).
• Experience with high availability clusters (Pacemaker).
• Familiarity with server monitoring and incident response.

Responsibilities

• Install, configure, and manage Linux servers and apps for high availability.
• Monitor performance, perform routine maintenance, and apply updates.
• Identify and resolve OS, hardware, and network issues.
• Enforce security best practices: firewalls, permissions, integrity.

Skills

RHEL administration

Linux servers

Pacemaker clustering

SAP on Linux

Security hardening

Tools

SCOM

AppDynamics

SCCM

Job description

This position functions around the clock, 24/7/365, to deliver extensive support for the enterprise RHEL server environment. The role involves the installation, configuration, management, operation, and maintenance of all RHEL server systems and RHEL Clusters (including Pacemaker). It is essential to ensure system stability through daily operations, patch management, monitoring, and troubleshooting, as well as providing support for SAP environments that operate on RHEL.

Key Responsibilities:

• Install, configure, and manage Linux servers and applications to ensure optimal performance and high availability.
• Monitor system performance, perform routine maintenance, and apply updates as needed.
• Identify and resolve issues related to the operating system, hardware, and network configurations.
• Implement and enforce security best practices within Linux environments, including firewalls, user permissions, and file integrity measures.
• Assist in the deployment and management of applications hosted on Linux servers.
• Document system configurations, procedures, and troubleshooting documentation for reference by the team.
• Support backup and recovery processes to maintain data integrity and availability.
• Collaborate with development teams to enhance deployment processes and ensure effective integration of Linux applications. Ensure that all RHEL systems are managed in accordance with vendor recommendations and security best practices, while also maintaining compliance with NCA, NIC, and SEC Cybersecurity regulations.
• Contribute to the management of the operating system lifecycle, including planning for version upgrades and decommissioning.
• Install, configure, manage, operate, and maintain RHEL server systems and clusters (e.g., RHEL 7, 8, 9). Provide daily operational support, including OS installation, monitoring, troubleshooting, virus protection, and resource management. Manage RedHat HA Extension (PACEMAKER) clusters and support SAP, SAP HANA, and SAP S/4HANA environments on the RHEL platform. Regularly review system logs and OS behavior to proactively monitor and address potential issues.
• Build strong relationships with the ERP, application, database, and web hosting teams for daily support, troubleshooting, and scheduled maintenance activities.
• Manage and maintain client agents for server monitoring (SCOM, AppDynamic) and server management (SCCM). Create and maintain technical and detailed design documentation, as well as technical operation documentation. Create, maintain, and delete user/group accounts and implement account policies. Raise and manage support tickets with RedHat, including troubleshooting, log collection, and follow-up.