Cryptography Lead: PKI, TLS & Secure Platform Architect

Rapsys Technologies Pte Ltd.; Singapore; On-site; SGD 180,000 - 260,000; Full time

Job summary

Rapsys Technologies Pte Ltd. in Singapore is seeking a Cryptography Lead to design, implement and maintain advanced encryption strategies protecting data and assets. The role focuses on PKI, TLS/SSL, and secure integrations across cloud and on-premises environments.

You will lead architecture, drive secure automation, and mentor engineering teams while coordinating with security and operations to maintain platform resilience. This is a office-based role in Singapore.

Qualifications

• 8+ years of relevant experience in cryptography, PKI and security platforms.
• Strong communication and stakeholder engagement capabilities.
• Certifications such as CISSP, CISM, CCSP or similar preferred.

Responsibilities

• Lead platform architecture, deployment, upgrades, patching and operational readiness.
• Manage PKI lifecycle including issuance, renewal, revocation and trust stores.
• Implement certificate discovery and TLS/SSL troubleshooting.
• Integrate Keyfactor or equivalent PKI solutions.
• Automate certificate workflows with CI/CD, Terraform, Ansible and Helm.
• Administer Linux and Kubernetes environments.
• Develop monitoring with OpenSearch, ELK and Splunk.
• Secure integration with AWS, Azure, F5, NGINX, IIS and Kubernetes.
• Provide technical leadership, runbooks, and knowledge transfer to teams.

Skills

PKI & TLS

Keyfactor

Security Automation

Linux & Kubernetes

CI/CD & IaC

Tools

Cipher Insights

Terraform

Ansible

Helm

OpenSearch

Job description

Rapsys Technologies Pte Ltd. in Singapore is seeking a Cryptography Lead to design, implement and maintain advanced encryption strategies protecting data and assets. The role focuses on PKI, TLS/SSL, and secure integrations across cloud and on-premises environments.

You will lead architecture, drive secure automation, and mentor engineering teams while coordinating with security and operations to maintain platform resilience. This is a office-based role in Singapore.