IT Security Engineer (Senior)

ATS Client; Pretoria; On-site; ZAR 900,000 - 1,500,000; Full time

Job summary

ATS Client is seeking a senior professional to support and maintain a global ActiveDirectory environment with Entra ID services for 100,000+ users. You will ensure high availability and state-of-the-art security across authentication platforms while driving the IT strategy within the Digital Identity domain.

Responsibilities include managing Entra ID infrastructure operations, maintenance and innovation initiatives, and collaborating with global teams to continuously improve processes and

Qualifications

• Degree or equivalent in Computer Science or related field.
• 5+ years IT experience in large Cloud/Hybrid environments ideal.
• Experience with Microsoft Entra ID, Active Directory and IAM concepts.
• Experience with IPv4/IPv6 and DNS is required.

Responsibilities

• Support and maintain global ActiveDirectory with 100,000+ users and Entra ID.
• Ensure high availability and strong security across authentication platforms.
• Drive the IT strategy within the Digital Identity domain.
• Manage Entra ID infrastructure operations, maintenance and innovation.

Skills

Microsoft Entra ID

Active Directory

Identity and Access Management

Kerberos

SAML

OAuth/OIDC

IPv4/IPv6/DNS

IaC automation

Education

Degree in Computer Science or Communications Engineering

Tools

PowerShell

Azure Functions

Job description

Job Description

Roles & Responsibilities

• Support and maintain a global ActiveDirectory environment with more than 100,000 user accounts and Entra ID services.
• Ensure high availability and state-of-the-art security across authentication platforms.
• Drive the implementation of the organization’s IT strategy within the Digital Identity domain.
• Manage global Entra ID infrastructure operations, maintenance and innovation initiatives.
• Continuously improve operational tasks and processes.
• Evaluate and implement new features, functions and innovations.
• Drive automation initiatives to ensure future readiness of the Entra ID platform.
• Collaborate closely with global, multicultural teams, stakeholders and interface partners.

Requirements

Essential Skills

• Minimum 3 years of professional experience in the implementation and support of Microsoft Enterprise IT architectures with a focus on Identity and Access Management Systems.
• Expert experience implementing and administering Microsoft Entra ID, Entra ID Connect and Active Directory.
• Strong knowledge of authentication protocols including Kerberos, SAML and OAuth/OIDC.
• Advanced experience with Entra ID and Zero Trust architecture concepts.
• Advanced experience developing and implementing Entra ID security concepts.
• Advanced experience with IPv4, IPv6 and DNS network protocols.
• Advanced experience with Infrastructure as Code automation using technologies such as PowerShell and Azure Functions.
• Any additional responsibilities assigned within the Agile Working Model (AWM).

Advantageous Skills

• Advanced experience working with hybrid cloud environments and Microsoft Azure.
• Advanced experience in Agile working environments.
• Strong teamwork and communication skills.
• Analytical thinking skills to coordinate, analyze and resolve technical issues.
• Self‑organised problem solver with a strong delivery focus on innovation and continuous improvement.

Qualifications & Experience

• Degree in Computer Science, Communications Engineering, or a comparable qualification.
• Minimum 5 years of professional IT experience, including responsibility for managing large Cloud and Hybrid environments.
• International experience is advantageous.