Public Key Infrastructure (PKI) Engineer - Banking Domain

NTT SINGAPORE PTE. LTD.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

NTT SINGAPORE PTE. LTD. seeks an experienced PKI Engineer to design, implement, administer, and support the organization’s PKI environment.

The role covers certificate lifecycle management, CA administration, cryptographic compliance, automation, and integration with enterprise applications and security platforms. Responsibilities include managing CA/RA, SSL/TLS deployments, and PKI integrations with monitoring, ITSM, and vulnerability management tools, ensuring secure digital certificates

Qualifications

• Experience with enterprise PKI environments and CA management.
• Design, implement, and govern certificate lifecycle management.
• Ability to automate certificate provisioning and renewal.

Responsibilities

• Manage enterprise PKI infrastructure, including CA/RA.
• Administer end-to-end certificate lifecycle across systems.
• Deploy SSL/TLS certificates to servers and apps.
• Implement certificate discovery and compliance reporting.
• Manage cryptographic keys and HSMs.
• Develop automation scripts and workflows.
• Support PKI integrations with enterprise tools.
• Troubleshoot PKI, trust chains, and encryption issues.
• Maintain PKI procedures and audit docs.
• Collaborate with cross-functional teams on PKI projects.
• Support TLS 1.3 adoption and PQC readiness.

Skills

PKI

TLS/SSL

ADCS

PowerShell

Python

Windows

Linux

Automation

RBAC

Audit controls

Certificate lifecycle

HSMs

Tools

DigiCert

Entrust

Keyfactor

Venafi

AppViewX

Job description

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.

Preferred Qualifications

• 10+ years of PKI, Cybersecurity, or Infrastructure Security experience.
• Experience in banking or financial services environments.
• Certifications such as CISSP, CISM, Security+, or PKI-related certifications would be advantages.
• Experience with certificate lifecycle management (CLM) platforms and automation solutions.