PKI (Public Key Infrastructure) Specialist (Contract)

ICON OUTSOURCING; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

ICON OUTSOURCING is seeking an experienced PKI Engineer to design, implement, administer, and support the organization’s PKI environment, ensuring secure certificate lifecycle management and CA governance. You will automate certificate operations and integrate PKI with enterprise applications and security platforms.

The role requires leadership across PKI CLM, HSMs, and cryptographic standards, with collaboration across security, infrastructure, and vendor teams, and a focus on TLS 1.3 adoption

Qualifications

• Deep knowledge of PKI, X.509, CA, CRL, TLS/SSL, and OCSP.
• Experience with PKI platforms (e.g., Microsoft ADCS, DigiCert, Entrust, Keyfactor, Venafi).
• Understanding of HSMs, audit controls, RBAC and security compliance.

Responsibilities

• Design, implement, administer, and support the PKI environment and CA operations.
• Manage certificate lifecycle, issuance, renewal, revocation, and inventory.
• Automate certificate operations and integrate PKI with enterprise apps and security platforms.

Skills

PKI

X.509 Certificates

CA administration

TLS/SSL

HSMs

PowerShell

Python

RBAC

Audit/compliance

PKI platforms

TLS 1.3

Cryptographic algorithms

Job description

Role Summary

We are seeking an experienced PKI Engineer to design, implement, administer, and support the organization's Public Key Infrastructure (PKI) environment. The role will be responsible for certificate lifecycle management, certificate authority (CA) administration, cryptographic standard compliance, automation of certificate operations, and integration with enterprise applications and security platforms.Responsible for the design, implementation, operation, and governance of the enterprise Public Key Infrastructure (PKI) environment, including certificate lifecycle management, key management, security compliance, automation, and integration with enterprise applications and infrastructure platforms. This role will support the PKI CLM program and ensure secure management of digital certificates across the organization.

Key Responsibilities

• Manage and maintain enterprise PKI infrastructure, including Certificate Authorities (CA), Registration Authorities (RA), and certificate management platforms.
• Administer end-to-end certificate lifecycle management, including issuance, renewal, revocation, replacement, and expiration tracking.
• Deploy and support SSL/TLS certificates across servers, middleware, databases, web applications, APIs, and network devices
• Implement certificate discovery, inventory management, and compliance reporting capabilities.
• Manage cryptographic keys and Hardware Security Modules (HSMs) in accordance with security standards.
• Develop and maintain automation scripts, APIs, and workflows for certificate provisioning and renewal.
• Support PKI integrations with enterprise tools such as monitoring, ITSM, vulnerability management, and secrets management platforms
• Troubleshoot certificate, authentication, encryption, and trust-chain related issues.
• Maintain PKI operational procedures, standards, and audit documentation.
• Collaborate with application, infrastructure, cybersecurity, and vendor teams on PKI projects and certificate deployments.
• Support modernization initiatives including TLS 1.3 adoption, certificate governance, and Post-Quantum Cryptography (PQC) readiness.

Required Skills

• Strong understanding of Public Key Infrastructure (PKI), X.509 Certificates, Certificate Authorities (CA), Certificate Revocation Lists (CRL), TLS/SSL, and Online Certificate Status Protocol (OCSP)
• Experience with Microsoft ADCS, DigiCert, Entrust, Keyfactor, Venafi, AppViewX, or similar PKI platforms.
• Knowledge of cryptographic technologies including RSA, ECC, AES-256, SHA-2/SHA-3, and TLS 1.2/1.3.
• Hands-on experience with Windows and Linux platforms.
• Scripting experience using PowerShell, Python, or Shell scripting.
• Understanding HSMs, RBAC, audit controls, and security compliance requirements.
• Experience in integrating PKI solutions with enterprise applications and middleware and database platforms.
• 10+ years of PKI, Cybersecurity, or Infrastructure Security experience.
• Certifications such as CISSP, CISM, Security+, or PKI-related certifications would be advantages
• Experience with certificate lifecycle management (CLM) platforms and automation solutions.