Senior Windows Server Administrator – JHB | Optimal Growth Technologies

Full Time ICT

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Job Location : Gauteng, Johannesburg

Deadline : January 07, 2026

About the Role

This Johannesburg-based role provides strategic oversight of high-RPM Windows server ecosystems and manages complex enterprise data migrations. Utilizing Oracle for database integration and AWS for cloud-based disaster recovery, the administrator ensures 100% compliance with institutional IT policies. Their leadership mitigates operational risk by optimizing system uptime and leveraging data to drive infrastructure innovation.

Role Overview

  • We are seeking an experienced and highly skilled Windows Server / Systems Administrator to manage, maintain, and optimize enterprise Windows-based infrastructure. The ideal candidate will have strong hands-on experience with Windows Server environments, Active Directory, virtualization, and enterprise-grade infrastructure, with the ability to operate in high-availability, security-conscious environments.
  • This role requires a proactive professional who can ensure system stability, performance, and security while supporting business-critical systems and users.

Key Responsibilities

Infrastructure & Server Management

  • Install, configure, administer, and maintain Windows Server environments (2012/2016/2019/2022).
  • Manage Active Directory, Group Policy (GPO), DNS, DHCP, and File/Print services.
  • Ensure high availability, performance, and reliability of server infrastructure.
  • Perform server monitoring, capacity planning, and performance tuning.

Virtualization & Cloud

  • Administer and support virtualized environments (VMware, Hyper-V).
  • Manage backup, disaster recovery, and business continuity solutions.
  • Support hybrid or cloud-based environments (Azure / M365 – advantageous).

Security & Compliance

  • Implement and maintain security best practices, patches, and updates.
  • Manage user access, permissions, and identity management.
  • Ensure systems comply with security policies, standards, and regulatory requirements.

Troubleshooting & Support

  • Provide Level 3 support for server, system, and infrastructure-related incidents.
  • Diagnose and resolve complex technical issues efficiently.
  • Work closely with network, security, and application teams to resolve cross-platform issues.

Documentation & Process Improvement

  • Maintain accurate technical documentation and system diagrams.
  • Develop and improve operational procedures, standards, and automation scripts.
  • Participate in infrastructure upgrades, migrations, and projects.

Technical Skills & Experience

Essential

  • 7+ years experience as a Windows Server / Systems Administrator.

Strong expertise in:

  • Windows Server (2012–2022)
  • Active Directory, GPO, DNS, DHCP
  • VMware and/or Hyper-V
  • Backup and recovery solutions
  • PowerShell scripting
  • Experience working in enterprise or large-scale IT environments.

Advantageous

  • Microsoft Azure / Hybrid Cloud experience
  • Microsoft 365 / Exchange Online
  • SCCM / Intune
  • Monitoring tools (SCOM, SolarWinds, etc.)
  • ITIL-based service environments

Soft Skills

  • Strong problem-solving and analytical abilities
  • Excellent communication and stakeholder engagement skills
  • Ability to work under pressure and manage multiple priorities
  • High attention to detail and commitment to system stability and security
  • Proactive, reliable, and service-oriented mindset

Qualifications

  • Diploma or Degree in Information Technology, Computer Science, or related field
  • Microsoft certifications (MCSA, MCSE, Azure) – advantageous but not essential

Career Growth & Education

A Bachelor’s degree in Information Technology is the required academic foundation, supplemented by senior-level Microsoft or AWS certifications. Advancement leads toward Chief Information Officer or Technical Director roles for those who demonstrate strategic infrastructure leadership. Pursuing executive leadership bootcamps and obtaining certifications in digital transformation through professional platforms provides a path to senior roles in global urban development.

Salary & Financial Insight

Estimated monthly salaries range from R60,000 to R98,000, reflecting the high strategic and operational stakes in the Gauteng economic hub. High-earning administrators should utilize private wealth management services and offshore investment portfolios to manage their capital effectively.

How to Apply for this Offer

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