System Administrator – Job Description

Job Purpose

·       Responsible for provisioning, configuration, and maintenance of systems hardware, operating environments, and applications.

·       Ensures system reliability, performance, scalability, and organizational security.

·       Manages user identities and access through Active Directory and Network Access Control.

·       Supports a secure and productive IT environment through strong operational and security practices.

Key Responsibilities - System Administration, Operations and Maintenance

·       Deploy and maintain IT infrastructure including AD, NAC, and End User Protection.

·       Ensure compliance with ISO 27000, PCI DSS, and GDPR.

·       Collaborate with NOC to integrate services with monitoring systems.

·       Optimize system performance (CPU, memory, disk, network).

·       Implement high availability and load balancing solutions.

·       Maintain audiovisual equipment for collaboration.

Troubleshooting and Support

·       Proactively resolve system issues to minimize downtime.

·       Provide Level 2 support for access-related issues.

·       Maintain incident response and resolution procedures.

·       Escalate issues per SLA and escalation matrix.

·       Train ICT Support Analysts on domain administration and endpoint protection.

·       Maintain domain-related SLAs and collaborate across IT teams.

Business Continuity / Disaster Recovery

·       Maintain backup and disaster recovery procedures.

·       Execute disaster recovery plans for domain and NAC systems.

·       Conduct failover tests and drills.

Security Operations

·       Maintain EDR and antivirus/antimalware systems.

·       Manage PKI and secure data in motion.

·       Ensure systems integrate with SOC for monitoring.

·       Perform system hardening and log reviews.

·       Handle incident triage and maintain response plans.

·       Review access logs and deactivate expired accounts.

·       Monitor security intelligence feeds.

Project Support and Technical Input

·       Translate business needs into technical specifications.

·       Support project planning, implementation, and testing.

·       Ensure successful integration of system components.

Documentation & Reporting

·       Maintain system documentation and SOPs.

·       Record security risks in the risk register.

·       Participate in ICT steering committee meetings.

·       Provide security status reports.

·       Track and document support incidents.

·       Develop knowledge base articles.

Vendor Management

·       Manage vendor contracts and SLAs.

·       Supervise contractors for installations and maintenance.

·       Ensure adherence to technical scope.

·       Escalate vendor issues where necessary.

Continuous Learning and Development

·       Stay updated on IT trends and technologies.

·       Pursue training and certifications.

·       Research and evaluate new technologies.

Job Specifications - Academic Qualifications

·       Bachelor’s degree in IT, Computer Science, or related field.

Professional Qualifications

·       ITIL

·       Microsoft Certifications (Azure Administrator Associate)

·       Linux System Administration

·       CEH, CompTIA Security+

Work Experience

·       Minimum 4-5 years’ experience as a Systems Administrator.

·       Experience in Active Directory design and deployment.

Competencies

·       Strong knowledge of IT infrastructure and systems security.

·       Proficiency in Windows Server and Linux.

·       Experience with automation and distributed systems.

·       Knowledge of application security best practices.

·       Strong analytical, problem-solving, and communication skills.

·       Team collaboration and organizational skills.

·       Familiarity with virtualization technologies.

·       Knowledge of Windows Server, macOS, and Linux.