Senior AIX UNIX Administrator

Confidential Company; Dubai; On-site; AED 120,000 - 180,000; Full time

Job summary

An established industry player is seeking a Senior AIX & Linux System Specialist to enhance their IT infrastructure team. This role requires a seasoned professional with over 8 years of experience in managing AIX and Linux systems, particularly in environments like Red Hat and OpenShift. You will be responsible for system administration, automation, and performance tuning while ensuring security best practices are implemented. The ideal candidate will thrive in a dynamic environment, leveraging their expertise in automation tools like Ansible and monitoring solutions to optimize system performance. Join a forward-thinking company where your skills will make a significant impact on innovative projects.

Qualifications

• 8+ years of IT infrastructure experience with a focus on AIX and Linux.
• Strong automation skills using Ansible and scripting languages.
• Experience with performance tuning and high availability solutions.

Responsibilities

• Manage AIX and Linux systems, ensuring optimal performance and security.
• Design and manage Red Hat OpenShift clusters for container orchestration.
• Automate infrastructure tasks using Ansible and shell scripting.

Skills

AIX System Administration

Linux System Administration

OpenShift

Automation and Scripting

Performance Tuning

Networking

Security Best Practices

Backup & Recovery

Education

Red Hat Certified Engineer (RHCE)

IBM Certified System Administrator – AIX v7

Red Hat Certified Specialist – OpenShift & Ansible

Kubernetes Certifications (CKA/Docker Certified Associate)

Tools

Ansible

Nagios

Prometheus

Grafana

Docker

Job description

We are looking for a highly skilled Senior AIX & Linux System Specialist to join our dynamic IT infrastructure team. The ideal candidate will have strong hands-on experience in managing AIX, Linux (Red Hat/Ubuntu/CentOS), and OpenShift environments with a strong foundation in system administration, automation, and performance tuning.

Responsibilities

1. AIX (IBM's UNIX Operating System)
   • AIX System Administration: Installation, configuration, patching, and upgrading AIX systems.
   • LVM (Logical Volume Management): Volume management, creating logical volumes, file systems, and managing storage.
   • Networking: Configuring network interfaces, TCP/IP, DNS, routing, and troubleshooting network connectivity.
   • Security: User authentication, LDAP, Kerberos, and implementing security best practices.
   • Performance Tuning: CPU, memory, disk, and network performance tuning and analysis.
   • Automation and Scripting: Using shell scripting (Bash, Korn Shell) to automate tasks.
   • Backup & Recovery: Implementing backup solutions and disaster recovery planning.
   • System Monitoring and Diagnostics: Using tools like NMON, topas, vmstat for performance monitoring.
2. Linux System Administration
   • Managing Red Hat, Ubuntu, CentOS, etc., through command-line tools and graphical utilities.
   • Package Management: RPM, DNF, YUM for installing and maintaining packages.
   • File System Management: Ext4, XFS, ZFS; disk partitioning, mounting, and file system permissions.
   • Networking: Configuring IP addresses, routing, VPNs, firewall settings, and troubleshooting using tools like netstat, iptables, and tcpdump.
   • Security: Implementing SELinux, firewall (firewalld), and auditd; SSH configuration, sudo policies.
   • Virtualization: Proficiency with tools like KVM, Xen, and Docker containers.
   • Automation: Bash scripting, Ansible, and automation frameworks for continuous integration and deployment.
   • System Monitoring: Using tools like Nagios, Prometheus, and Grafana for monitoring and alerting.
   • Latest Red Hat Certified System Administration (RHCSA/RHCE): Certification and deep knowledge in managing Red Hat-based distributions.
   • Red Hat Satellite: Managing systems with Red Hat Satellite for centralized management.
   • SELinux Configuration: Enforcing security policies using SELinux in Red Hat environments.
   • Configuration Management: Using Ansible, Puppet, or Chef for system automation and configuration management.
   • High Availability: Configuring clustering solutions such as Red Hat Cluster Suite and Pacemaker.
3. Redhat OpenShift
   • Design, deploy, and manage Red Hat OpenShift Container Platform clusters.
   • Configure and optimize OpenShift networking, storage, and security.
   • Implement high availability (HA) and disaster recovery (DR) solutions for OpenShift.
   • Develop, maintain, and optimize Ansible playbooks and roles for infrastructure automation.
   • Automate provisioning, configuration, and management of servers, networks, and applications.

Desired Candidate Profile

• 8+ years of IT infrastructure and operations experience
• 5+ years of AIX and Linux system administration
• 3+ years with Red Hat OpenShift and Ansible
• Proven expertise in automation, performance tuning, and security
• Red Hat Certified Engineer (RHCE) or Specialist in Linux
• IBM Certified System Administrator – AIX v7
• Red Hat Certified Specialist – OpenShift & Ansible
• Kubernetes Certifications (CKA/Docker Certified Associate)