Senior PKI & Certificate Lifecycle Engineer

Tangspac Consulting Group; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Tangspac Consulting Group in Singapore is seeking a senior PKI & security infrastructure specialist to lead end-to-end certificate lifecycle management, TLS deployment, and HSM governance across IT and OT environments.

You will work with IT, security, and vendor teams to drive automation, PKI integrations, and compliance, while advancing TLS 1.3 adoption and PQC readiness for enterprise systems.

Qualifications

• Proven experience with enterprise PKI infrastructure and CA/RA management.
• Strong knowledge of PKI concepts: X.509, CRL, OCSP, TLS/SSL.
• Experience integrating PKI with enterprise apps, middleware, and databases.
• Scripting and automation for certificate provisioning and renewal.

Responsibilities

• Administer end-to-end certificate lifecycle management.
• Provide on-site support for remote teams accessing IT infrastructure devices.
• Develop and maintain automation scripts, APIs, and workflows for certificate provisioning and renewal.
• Collaborate with IT, security, and vendor teams on PKI deployments and projects.
• Drive TLS 1.3 adoption and PQC readiness.

Skills

PKI infrastructure

Certificate management

TLS/SSL

Scripting (PowerShell/Python)

Windows & Linux

Cloud AWS

ADCS/DigiCert Entrust Keyfactor Venafi

Automation & CLM

Security compliance

Vendor coordination

Education

Bachelor's degree in IT/CS

CISSP/CISM certification

Tools

DigiCert

Entrust

Keyfactor

Venafi

AppViewX

Job description

Tangspac Consulting Group in Singapore is seeking a senior PKI & security infrastructure specialist to lead end-to-end certificate lifecycle management, TLS deployment, and HSM governance across IT and OT environments.

You will work with IT, security, and vendor teams to drive automation, PKI integrations, and compliance, while advancing TLS 1.3 adoption and PQC readiness for enterprise systems.