System Administrator – Linux & Virtualization at Computer Centre Tanzania

Company: Computer Centre Tanzania
Job Title: System Administrator – Linux & Virtualization
Department: Technical Services / Infrastructure
Reports To: Infrastructure / Technical Services Manager
Location: Dar es Salaam, Tanzania
Employment Type: Full-time
Posted: 26 August 2026
Application Deadline: Not specified

Job Purpose

The System Administrator – Linux & Virtualization will be responsible for administering, configuring, maintaining, monitoring, troubleshooting, and optimizing enterprise Linux and virtualized infrastructure environments.

Key Responsibilities

Linux & Server Administration

• Install, configure, administer, and maintain Linux servers, particularly Red Hat Enterprise Linux (RHEL) and SUSE Linux Enterprise Server (SLES).
• Manage and troubleshoot Linux networking, DNS, SSH, storage, users, permissions, and system processes.
• Perform operating-system patching, upgrades, lifecycle management, and system hardening.

VMware & Virtualization

• Administer VMware vSphere, including ESXi hosts, vCenter Server, and virtual machines.
• Provision, configure, migrate, optimize, and decommission virtual machines.
• Manage virtual CPU, memory, storage, and networking resources.
• Perform virtualization patching, upgrades, and lifecycle management.

Infrastructure Monitoring & Support

• Monitor server, VM, and infrastructure availability, performance, capacity, and health.
• Proactively identify and resolve infrastructure issues.
• Provide Level 2 and Level 3 technical support.
• Troubleshoot complex infrastructure incidents and conduct root-cause analysis within agreed SLAs.

Storage, Backup & Disaster Recovery

• Support enterprise SAN/NAS storage environments.
• Troubleshoot storage connectivity, performance, and capacity issues.
• Support backup, restoration, disaster recovery, and business continuity environments.
• Monitor backups and participate in recovery testing.

Security & Compliance

• Implement and maintain security controls across Linux and virtualization environments.
• Manage access controls and support vulnerability remediation.
• Ensure infrastructure complies with applicable security and compliance requirements.

Projects & Automation

• Participate in infrastructure implementations, migrations, upgrades, and technology-refresh projects.
• Support high-availability, disaster-recovery, and business-continuity configurations.
• Develop scripts and use automation tools to streamline administration and maintenance activities.

Documentation & Collaboration

Maintain technical documentation covering:

• Infrastructure configurations
• Architecture diagrams
• Standard operating procedures
• Implementation records
• Troubleshooting guides

Collaborate with Network, Database, Security, Application, technical teams, vendors, and customers to maintain reliable enterprise infrastructure.

Qualifications & Experience

Candidates should have:

• Bachelor’s degree or diploma in Computer Science, Information Technology, Computer Engineering, Information Systems, or a related field.
• 3–5 years of hands-on experience in Linux system administration and enterprise infrastructure.
• Demonstrable experience administering Red Hat and/or SUSE Linux environments.
• Hands-on experience with VMware vSphere, ESXi, and vCenter.
• Experience in enterprise data-centre or infrastructure environments is highly desirable.
• Experience with enterprise storage, backup, and disaster-recovery technologies is an added advantage.
• Experience supporting infrastructure implementation and migration projects is an advantage.

Professional Certifications

The following certifications are an added advantage:

• RHCSA – Red Hat Certified System Administrator
• RHCE – Red Hat Certified Engineer
• SUSE Certified Administrator
• SUSE Certified Engineer
• VCP – VMware Certified Professional
• Other relevant VMware, Linux, cloud, networking, or infrastructure certifications

How to Apply

Qualified candidates should submit their CV by email to either:

hr@cctz.co.tz
hr.admin@cctz.co.tz

Application Deadline: Not specified in the provided advertisement.