Linux System Administrator at Abbey Mortgage Bank Plc

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 downsize 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.

We are recruiting to fill the position below:

Job Title: Linux System Administrator

Locations: Lagos 
Job Type: Full-time

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.

Application Closing Date
Not Specified.

How to Apply
Interested and qualified candidates should send their CV to: careers@abbeymortgagebank.com using the Job Title as the subject of the email.