Senior PKI & Cryptography Security Engineer (PQC Ready)

AVATAR MODERN TECHNO SERVICES PTE. LTD.; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

AVATAR MODERN TECHNO SERVICES PTE. LTD. is seeking a seasoned Cryptography Engineer/PKI program lead to coordinate delivery between IT security architects, partners, and consuming teams.

You will advance certificate and key management across on-prem and AWS, enabling a PQC transition with strong governance and operational excellence. The role requires deep PKI expertise, hands-on HSM experience, and proven ability to collaborate with vendors and internal teams to ensure security, reliability,

Qualifications

• 5+ years IT security with PKI or enterprise key management
• Strong knowledge of X.509, TLS/mTLS, PKCS, certificate authorities, and key hierarchies
• Hands-on experience with certificate lifecycle platforms (CyberArk Venafi, Keyfactor, Entrust)
• Hands-on experience with enterprise key management and/or HSMs (Entrust nShield, Thales CipherTrust, AWS KMS/CloudHSM)
• Experience integrating security platforms with enterprise systems via REST APIs (ServiceNow, PingOne, Splunk, Nessus)
• Proficiency in scripting languages (Python/PowerShell/Bash)
• Detail-oriented with strong analytical and problem-solving skills
• Experience with SDLC/Agile methodologies
• Excellent written and verbal communication; cross-stakeholder coordination

Responsibilities

• Coordinate delivery between IT security architects, partners, and consuming teams for PKI/CLM/EKMS
• Conduct requirement workshops across on-prem and AWS estates
• Review CLM/EKMS designs to meet security and operational needs
• Set up and streamline certificate and key management processes (issuance, renewal, revocation, rotation)
• Incorporate cryptography best practices (FIPS, NIST, X.509, PKCS) into workflows
• Monitor incidents related to certificates and keys; advise teams
• Manage vendor relationships for cryptographic solutions
• Coordinate projects between internal resources and external vendors
• Support cryptographic asset discovery and PQC transition; prep for cryptography engineer role

Skills

PKI management

Certificate lifecycle

HSMs

Cloud PKI (AWS)

Scripting: Python/PowerShell/Bash

REST API integration

Agile / SDLC

Communication skills

Education

Degree in Computer Science/Information Technology

Tools

CyberArk Venafi

Keyfactor

Entrust

AWS KMS/CloudHSM

Thales CipherTrust

ServiceNow

PingOne

Splunk

Nessus

Job description

AVATAR MODERN TECHNO SERVICES PTE. LTD. is seeking a seasoned Cryptography Engineer/PKI program lead to coordinate delivery between IT security architects, partners, and consuming teams.

You will advance certificate and key management across on-prem and AWS, enabling a PQC transition with strong governance and operational excellence. The role requires deep PKI expertise, hands-on HSM experience, and proven ability to collaborate with vendors and internal teams to ensure security, reliability,