Senior Systems Administrator X2 (Fixed Term Contract)

GMI Tech (ZA); Prince Albert; On-site; ZAR 600 000 - 900 000; Full time

Job summary

A leading technology company in South Africa is seeking a Senior System Administrator to manage and maintain both on-premises and cloud-based systems. The role involves overseeing system performance, security management, and mentoring junior staff while ensuring compliance with industry standards. Ideal candidates will have extensive experience in system administration, strong technical competencies, and excellent problem-solving skills.

Qualifications

• Minimum of 5+ years in system administration with expertise in network infrastructure.
• Proficiency in Windows server environments and strong knowledge of virtualization.

Responsibilities

• Manage and maintain Windows, Active Directory, Linux, and virtual servers.
• Configure and monitor firewalls, VPNs, and network infrastructure.
• Oversee the operation of cloud services (Azure) and implement best practices.

Skills

Problem Solving

Communication

Teamwork

Education

IT Diploma

Bachelor's Degree

MCSE

CCNA

N+

A+

Tools

Hyper-V

Azure

Veeam

Zimbra

Kaspersky

Job description

Position Overview:
The Senior System Administrator will oversee the installation, configuration, maintenance, and reliable operation of computer systems, servers, and network infrastructure. This role is responsible for managing both on-premises and cloud-based systems while ensuring high availability and security of business applications. The Senior System Administrator will collaborate with cross-functional teams, mentor junior administrators, and lead infrastructure improvement projects. The Sys Admin will work with service providers to resolve calls within the required timeframe.

Key Responsibilities:

1. System Administration: Manage and maintain Windows, Active Directory, Linux, and virtual servers (Hyper-V), ensuring systems run smoothly with optimal performance.
2. Network Management: Configure and monitor firewalls, VPNs, and network infrastructure to ensure secure and efficient data communication.
3. Cloud Infrastructure: Oversee the operation of cloud services (Azure), implementing best practices for cloud architecture.
4. Security Management: Implement security protocols and patches to ensure compliance with industry standards, responding proactively to vulnerabilities.
5. Backup & Recovery: Manage data backups, disaster recovery plans, and ensure data integrity through routine testing and verification.
6. Monitoring & Performance Tuning: Use monitoring tools (e.g., Data Dog) to track system performance and resolve issues proactively.
7. Documentation: Create and maintain comprehensive documentation related to systems, configurations, procedures, and troubleshooting.
8. Mentorship & Training: Mentor junior system administrators, providing guidance to improve team performance and efficiency.
9. Project Management: Lead infrastructure upgrade projects, system migrations, and continuous improvement initiatives.
10. Compliance: Ensure all systems are compliant with regulatory requirements, company policies, and industry best practices (e.g., NIST & ISO).
11. Troubleshooting: Provide advanced troubleshooting and support for complex issues, working closely with the IT support team and other departments.
12. Additional responsibilities include penetration tests, vulnerability assessments, backup and disaster recovery (Veeam), Zimbra email, Active Directory, Hyper-V, Kaspersky antivirus, website updates, server rack management, licensing, LAN/WAN management, cabling, Ubiquiti and Mikrotik networking, VPN, VOIP, CCTV, AV support, virtual platforms, helpdesk management, proxy servers, inventory management, AD audit, and firewall management.

Qualifications:

• IT Diploma or Bachelor's Degree
• MCSE or equivalent
• CCNA
• N+, A+

Experience:

Minimum of 5+ years in system administration with expertise in network infrastructure, server management, wireless networks, and cloud services.

Technical Competencies:

• Proficiency in Windows server environments
• Strong knowledge of virtualization (Hyper-V)
• Experience with Azure cloud platform
• Networking knowledge (TCP/IP, DNS, DHCP, VPN, VLANs, firewalls)
• Scripting skills (PowerShell, Bash)
• Knowledge of IT security standards and best practices

Soft Skills:

• Excellent problem-solving skills
• Ability to manage multiple tasks and projects
• Strong communication skills
• Teamwork and organizational skills

Employment Equity statement included.