Linux Administrator (m/f/d)
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Key skills for this role
About the Role
Halian seeks a Linux Administrator to manage and secure enterprise Linux environments in Abu Dhabi, ensuring systems are patched, hardened, and compliant with CIS Benchmarks and DISA STIGs.
Key Skills for This Role
Responsibilities
- Execute OS level security patching across Linux environments (RHEL, CentOS, etc.)
- Align patching processes with CIS Benchmarks and DISA STIG standards
- Ensure timely identification and remediation of vulnerabilities
- Monitor patch compliance and generate reports for audits and governance
- Perform kernel level hardening to enhance system security
- Configure and enforce SELinux policies across environments
- Implement secure configurations in line with enterprise security standards
- Identify and remediate system misconfigurations and vulnerabilities
- Design and manage automated patching workflows using Ansible and Red Hat Satellite
- Develop playbooks and automation scripts for patch deployment, configuration management, and routine maintenance
- Minimize downtime during patching and updates through careful planning and high availability strategies
- Perform system monitoring and proactive maintenance
Requirements
- Bachelor’s degree in Information Technology, Computer Science, Systems Engineering or related field
- 5–8 years of experience in Linux system administration in enterprise infrastructure environments
- Strong hands on experience with OS patching and system hardening in large scale production environments
- Experience with SELinux configuration and troubleshooting
- Experience with configuration management tools (Ansible, Satellite)
- Familiarity with CIS Benchmarks and DISA STIG frameworks
- Proficiency in Shell scripting (Bash) and automation
- Red Hat Certified Engineer (RHCE) or equivalent certification preferred
Full Job Posting
Role Purpose
- The Linux Administrator is responsible for managing and securing enterprise Linux environments, ensuring systems are patched, hardened, and compliant with industry standards such as CIS Benchmarks and DISA STIGs.
- The role focuses on OS level patching, kernel hardening, SELinux enforcement, and automation of patch orchestration, ensuring minimal downtime across large scale, business critical environments.
Key Responsibilities
- OS Patch Management & Compliance: Execute OS level security patching across Linux environments (RHEL, CentOS, etc.)
- Align patching processes with CIS Benchmarks and DISA STIG standards
- Ensure timely identification and remediation of vulnerabilities
- Monitor patch compliance and generate reports for audits and governance
- System Hardening & Security: Perform kernel level hardening to enhance system security
- Configure and enforce SELinux policies across environments
- Implement secure configurations in line with enterprise security standards
- Identify and remediate system misconfigurations and vulnerabilities
- Patch Automation & Orchestration: Design and manage automated patching workflows using Ansible and Red Hat Satellite
- Develop playbooks and automation scripts for patch deployment, configuration management, and routine maintenance
- Ensure scalability and repeatability of patching processes
- System Availability & Maintenance: Minimize downtime during patching and updates through careful planning and high availability strategies
Qualifications & Experience
- Bachelor’s degree in Information Technology, Computer Science, Systems Engineering or related field
- 5–8 years of experience in Linux system administration in enterprise infrastructure environments
- Strong hands on experience with OS patching and system hardening in large scale production environments
- Experience in regulated industries (e.g., banking) is preferred
Technical Skills
- Strong expertise in Linux OS (RHEL, CentOS, Oracle Linux, etc.) and system hardening
- Experience with SELinux configuration and troubleshooting
- Kernel tuning and hardening techniques
- Configuration management tools (Ansible, Satellite)
- Familiarity with CIS Benchmarks and DISA STIG frameworks
- Monitoring and logging tools
- Proficiency in Shell scripting (Bash) and automation
Certifications
- Red Hat Certified Engineer (RHCE)
- Red Hat Certified System Administrator (RHCSA)
- Linux Foundation Certified System Administrator (LFCS)
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