Linux System Administrator at Abbey Mortgage Bank Plc

Home ownership is a priority for most Nigerians. However, the accessibility has remained a dream for a significant proportion of the population due to limited sources of suitable financing and limited access to affordable housing. Abbey Mortgage Bank Plc is offering through its involvement in the housing and mortgage sectors to make this dream a reality. Abbey Mortgage Bank Plc is the premier, largest and most profitable, non-aligned Primary Mortgage Bank in Nigeria. Abbey is one of the seven national Primary Mortgage Banks (PMB) licensed by the Central Bank of Nigeria and Federal Mortgage Bank of Nigeria (FMBN). The recent recapitalization exercise saw the down size from 105 mortgage banks to only 34 now surviving. We not only emerged successfully capitalized but one of the few that also met our National obligation as well as amongst the public liability companies. Abbey Mortgage Bank Plc focuses on providing economical housing units for interested home seekers/developers/cooperatives who desire a well-structured mortgage offer. Further to this, we also keep our customers abreast with financial activities as well as provide high quality customer service.

About the job

• 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 (e.g., 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 (e.g., 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, Information Technology, or related field (or equivalent experience).
• 3+ years of hands-on experience as a Linux System Administrator or in a related infrastructure role.
• Strong proficiency in Linux server administration (RHEL, CentOS, Ubuntu, or SUSE).
• Experience with virtualization platforms (e.g., Nutanix AHV, VMware, or KVM).
• Working knowledge of cloud platforms (AWS, Azure, or Google Cloud) and hybrid deployments.
• Proficiency in shell scripting and automation (Bash, Python, or Ansible).
• Solid understanding of networking fundamentals (TCP/IP, DNS, routing, VPNs, firewalls).
• Experience managing storage systems, logical volumes (LVM), and RAID configurations.
• Familiarity with system monitoring, logging, and performance tuning tools.
• Experience with backup solutions and disaster recovery planning.
• Strong troubleshooting, documentation, and communication skills.
• Relevant certifications such as Red Hat Certified System Administrator (RHCSA), CompTIA Linux+, AWS Certified SysOps Administrator, or similar are a plus.

Method of Application