Linux System Administrator at Abbey Mortgage Bank Plc

About the Role

We are seeking a highly skilled Linux System Administrator to join our IT team and ensure the stability, security, and optimal performance of our infrastructure. The ideal candidate will manage and support on-premises and cloud-based Linux environments, perform routine maintenance, and troubleshoot complex issues to ensure seamless operations across the organization.

This role requires deep hands-on experience with Linux server administration, system automation, monitoring, and performance tuning, with a focus on reliability, scalability, and security.

Key Responsibilities

• Install, configure, and maintain Linux servers (RHEL, CentOS, Ubuntu) across on-premises and cloud environments (AWS, Azure, or Nutanix)
• Monitor system performance, capacity, and availability using tools such as Nagios, Prometheus, Grafana, or Zabbix
• Implement and manage security best practices, including user access controls, patch management, and configuration hardening
• Perform routine maintenance, OS updates, and kernel upgrades while ensuring system uptime and performance
• Troubleshoot and resolve server, storage, and network-related issues efficiently to minimize downtime
• Manage and maintain DNS, DHCP, NTP, and SMTP services, along with configuration files under /etc/
• Develop and maintain system documentation, including architecture diagrams, configuration details, and operational procedures
• Automate routine administrative and deployment tasks using Bash, Python, or Ansible
• Manage user accounts, groups, and permissions via command-line tools and directory services (LDAP, FreeIPA, or Active Directory integration)
• Support backup, restore, and disaster recovery operations using enterprise backup solutions
• Collaborate with other IT teams to optimize infrastructure for performance, reliability, and scalability

Qualifications

Bachelor's degree in Computer Science or related field