Senior Windows Server Administrator at Optimal Growth Technologies

Johannesburg, Gauteng, South Africa -

Full Time

Start Date

Immediate

Expiry Date

22 Mar, 26

Salary

0.0

Posted On

22 Dec, 25

Experience

10 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Windows Server, Active Directory, Group Policy, DNS, DHCP, VMware, Hyper-V, Backup Solutions, Disaster Recovery, PowerShell Scripting, Microsoft Azure, Microsoft 365, SCCM, Intune, Monitoring Tools, ITIL

Industry

IT Services and IT Consulting

Description

Job Title: Senior Windows Server / Systems Administrator Experience Required: 7+ years 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

Responsibilities

The Senior Windows Server Administrator will manage, maintain, and optimize enterprise Windows-based infrastructure, ensuring system stability, performance, and security. Responsibilities include server management, virtualization support, security compliance, troubleshooting, and documentation.