Infrastructure Manager – IT & Electrical Systems

Praesignis; Johannesburg; On-site; ZAR 800 000 - 1 200 000; Full time

Job summary

A leading IT organization in Johannesburg is seeking an Infrastructure Manager to oversee critical IT infrastructure, ensuring availability, security, and scalability of systems. The role involves managing vendor relationships, compliance, and internal stakeholder satisfaction. Ideal candidates should have strong systems administration experience and network management skills. This position offers an opportunity to lead IT operations in a dynamic environment.

Qualifications

• Strong experience in systems infrastructure administration.
• Network administration skills including VLANs and firewalls.
• Ability to monitor infrastructure performance.

Responsibilities

• Lead systems and infrastructure management.
• Oversee network, server, storage, and virtualization environments.
• Provide internal technical escalation support for critical incidents.

Skills

Systems infrastructure administration

Network administration

Analytical and troubleshooting ability

Clear communication

Tools

Windows Server

Linux

VMware

SQL

Job description

Job title : Infrastructure Manager – IT & Electrical Systems

Job Location : Gauteng, Johannesburg

Deadline : November 30, 2025

Overview

The purpose of this role is to lead and manage the organisation’s IT infrastructure environments, ensuring the stability, scalability and security of systems. The Infrastructure Manager is accountable for infrastructure availability, power continuity, internal change governance and vendor performance, while providing senior-level escalation support.

Primary Responsibilities

• Lead systems and infrastructure management (on‑premises & cloud).
• Oversee network, server, storage and virtualisation environments.
• Implement and monitor security, backup and disaster recovery strategies.
• Establish and maintain system observability and performance optimisation.
• Govern internal change control, including UAT sign-off and controlled deployments.
• Ensure compliance with relevant IT policies, standards and software licensing.
• Oversee power and facilities systems supporting IT operations, including inverters, lithium battery storage and other miscellaneous infrastructure support.
• Manage third‑party / vendor relationships and SLA performance.
• Provide internal technical escalation support for critical incidents.

Key Performance Indicators

• Meet or exceed agreed uptime targets across systems, networks and applications.
• Successful recovery testing of backup and disaster recovery solutions.
• Compliance with software licensing and security governance.
• Change management adherence and risk minimisation.
• Positive internal stakeholder satisfaction feedback.

Required Technical Competencies

• Strong experience in systems infrastructure administration: Windows Server, Linux, VMware.
• Network administration, including VLANs, firewalls, VPN and routing.
• Infrastructure performance monitoring and root cause analysis.
• Electrical infrastructure understanding, including Inverter and battery storage.
• Active Directory and Group Policy.
• SQL DBA.
• Technical documentation and architecture familiarity.

Behavioural & Leadership Competencies

• Strong analytical and troubleshooting ability.
• Effective prioritisation and task execution under pressure.
• Clear written and verbal communication.
• High level of accountability, ownership and professional integrity.
• Ability to influence cross-functional teams without direct management authority.