PKI & Crypto Infrastructure Engineer

DataTech Recruitment; Johannesburg; On-site; ZAR 603,000 - 737,000; Full time

Job summary

DataTech Recruitment seeks a PKI & Cryptographic Services Engineer for a permanent, on-site role in Sandton, Johannesburg. The engineer will support PKI, cryptographic services and digital trust, working across Windows and Linux, AD/LDAP, databases and HSMs. The role emphasizes hands-on systems and security across diverse environments.

The candidate will manage certificate lifecycles, troubleshoot across platforms, and collaborate with vendors and customers to maintain secure digital services.

Qualifications

• IT degree, diploma or relevant technical certification.
• 2 to 5 years of relevant technical experience in infrastructure, systems administration or PKI.
• Strong hands-on experience with Windows Server and Linux administration.
• Good networking knowledge: TCP/IP, routing, switching, ports, firewalls and OSI model.
• Experience with certificate-enabled technologies such as SSL/TLS, S/MIME or Code Signing.
• Exposure to PKI and certificate management concepts; certificate lifecycle management.

Responsibilities

• Support and maintain PKI, Digital Trust and cryptographic services across production environments.
• Investigate and resolve issues spanning applications, OS, networks, databases and directory services.
• Manage certificate lifecycle activities including issuance, renewal, revocation, discovery and trust chains.
• Configure, monitor and troubleshoot Windows and Linux servers and supporting services.
• Work with CA and certificate management platforms (Entrust, EJBCA, Venafi).
• Support HSMs, including Thales Luna and nCipher/Entrust environments.
• Troubleshoot Active Directory, LDAP and authentication issues affecting PKI platforms.
• Monitor production logs, alerts and platform health, escalate issues before service impact.
• Troubleshoot SSL/TLS, certificate bindings, and certificate-enabled apps.
• Diagnose networking issues across routing, ports, firewalls and infrastructure.
• Assist with high availability, clustering and replication environments.
• Manage incidents, service requests and changes via Service Desk.
• Collaborate with customers, internal engineering teams and vendors to resolve problems.

Education

IT degree or diploma or relevant technical certification

Tools

Entrust CA

EJBCA

Entrust CLM/EAS

Venafi

Thales Luna HSM

nCipher

Windows Server

Oracle

RHEL Linux

OpenLDAP

Active Directory

PostgreSQL

MSSQL

IIS

Apache

OpenSSL

Splunk

REST APIs

PowerShell

Job description

DataTech Recruitment seeks a PKI & Cryptographic Services Engineer for a permanent, on-site role in Sandton, Johannesburg. The engineer will support PKI, cryptographic services and digital trust, working across Windows and Linux, AD/LDAP, databases and HSMs. The role emphasizes hands-on systems and security across diverse environments.

The candidate will manage certificate lifecycles, troubleshoot across platforms, and collaborate with vendors and customers to maintain secure digital services.