SYSTEMS ADMINISTRATOR

TISA is seeking an experienced and highly motivated Systems Administrator to join our Information Technology Infrastructure team. The incumbent is responsible for the administration, availability, performance and security of the infrastructure platforms that power TISA's digital banking services, including core banking, payments, cards, ATM/POS, mobile and internet banking, API services and supporting enterprise systems. The role manages physical, virtual and cloud server and storage environments, ensuring they are resilient, secure, scalable and compliant, and supports always-on, customer-facing digital channels through proactive monitoring, automation and disciplined operational practices.

Key Responsibilities:

• Administer and maintain server, storage and virtualization platforms supporting core banking and digital banking services.

• Monitor and manage the performance, availability and reliability of critical banking infrastructure and digital channels.

• Support customer-facing digital services including mobile banking, internet banking, ATM/POS systems, card services and payment platforms.

• Manage incident, problem and root cause analysis activities to ensure service interruptions are resolved promptly and effectively.

• Implement security hardening, patch management and vulnerability management practices across infrastructure platforms.

• Maintain privileged access controls, multi-factor authentication (MFA), role-based access controls (RBAC) and cybersecurity monitoring solutions.

• Administer hybrid cloud and on-premise infrastructure environments, ensuring capacity planning and performance optimization.

• Manage data centre operations and ensure compliance with security and operational standards.

• Coordinate and execute backup management, disaster recovery testing and business continuity activities.

• Ensure infrastructure environments comply with regulatory, audit and internal policy requirements.

• Support change and release management processes, ensuring all changes are appropriately documented and approved.

• Develop and maintain system documentation, operational procedures and technical standards.

• Implement automation and Infrastructure as Code (IaC) initiatives to improve efficiency and reduce operational risk.

• Collaborate with application, security, digital banking and vendor teams to deliver reliable and secure technology services.

• Participate in infrastructure projects, digital transformation initiatives and continuous improvement activities.

• Participate in the 24/7 on-call roster and provide after-hours support for scheduled maintenance, disaster recovery testing and critical incident response.

Key Educational Qualification, Requirements and Experience:

• Bachelor's Degree in Information Technology, Computer Science, or a related discipline.

• Relevant industry certifications such as CompTIA Security+, Microsoft Certified: Azure Administrator, VMware, Linux or equivalent certifications will be highly regarded.

• Minimum of five (5) years' experience in Systems Administration, preferably within a banking, financial services or highly regulated environment.

• Strong knowledge of Windows Server, Linux operating systems, virtualization technologies and hybrid cloud environments.

• Experience supporting mission-critical systems including core banking, payment switches, card management, ATM/POS networks, internet and mobile banking platforms.

• Extensive experience with data centre operations, infrastructure monitoring and capacity management.

• Strong understanding of IT infrastructure security, cybersecurity controls and vulnerability management practices.

• Experience with security technologies including firewalls, IDS/IPS, EDR and SIEM platforms.

• Working knowledge of automation and observability tools such as PowerShell, Bash, Ansible, Terraform and monitoring platforms.

• Sound understanding of IT governance, IT General Controls, change management, disaster recovery and business continuity principles.

• Excellent analytical and problem-solving skills with the ability to diagnose and resolve complex technical issues.

• Strong communication and stakeholder engagement skills with the ability to work effectively across technical and business teams.

 If interested, please submit your Expression of Interest, Updated Resume, copies of your Educational Qualifications and References by clicking on “Apply Now”.

ONLY shortlisted applicants will be contacted

Applications close at 04:00 PM, Friday 20th November 2026

 Note:

Candidates deemed successful after the ‘Interview Process” will be subjected to providing the following Pre-Employment Requirement(s).

1. Medical Examination Report from recognized medical institutions. (No older than 12 months)

2. Police Clearance Certificate (No older than 12 months)