Lead Security Architect - Enterprise

We are seeking a Lead Security Architect to drive secure-by-design architecture across enterprise infrastructure, cloud, applications, identity platforms and emerging technologies.

This is an exciting opportunity to work at the intersection of cybersecurity, technology transformation and innovation, helping a large, complex organisation adopt new technologies securely while strengthening its overall security architecture.

Key Responsibilities

• Lead security architecture reviews and provide technical guidance across enterprise IT infrastructure, networks, cloud platforms, applications and emerging technologies.

• Define and implement secure-by-design principles, security architecture standards and reference architectures aligned with enterprise security policies.

• Assess security risks and recommend appropriate controls for new technology initiatives, digital transformation programmes and solution designs.

• Provide security architecture expertise across key domains, including:

  • Infrastructure & Network Security: Zero Trust, network segmentation, endpoint protection, secure connectivity and hybrid infrastructure.

  • Cloud Security: AWS, Azure and GCP security architecture, cloud-native controls, workload protection and DevSecOps.

  • Identity & Access Management: IAM, PAM, authentication, authorisation, federation and identity governance.

  • Application & Data Security: Secure SDLC, API security, encryption, data protection and vulnerability management.

  • AI & Emerging Technology Security: Security architecture for AI/ML platforms, Generative AI, LLMs, autonomous AI agents and emerging technology ecosystems.

• Conduct security architecture assessments, threat modelling and technical risk reviews to identify vulnerabilities and recommend practical mitigation strategies.

• Collaborate with engineering, infrastructure, cloud, application development, AI and business teams to embed security throughout the technology lifecycle.

• Evaluate new security technologies, tools and solutions to strengthen enterprise security capabilities.

• Review third-party technology solutions and vendor architectures to ensure alignment with security requirements.

• Support security governance, regulatory compliance and alignment with industry frameworks such as NIST, ISO 27001 and Zero Trust principles.

• Provide technical leadership and guidance to stakeholders, translating complex security risks into practical architecture recommendations.

Requirements

• 8+ years of experience in cybersecurity, with substantial experience in security architecture, solution security design or enterprise security engineering.

• Strong technical foundation across multiple security domains, such as infrastructure, network, cloud, IAM, application or data security.

• Experience designing, reviewing or implementing security architectures in complex enterprise environments.

• Good understanding of security technologies and architectural controls, including Zero Trust, network segmentation, IAM/PAM, encryption and cloud security.

• Experience conducting security assessments, threat modelling and architecture risk reviews.

• Exposure to emerging technologies such as AI/ML, Generative AI, automation, quantum computing or post-quantum cryptography would be advantageous.

• Familiarity with cybersecurity frameworks and standards such as NIST, ISO 27001, CIS Controls and OWASP.

• Strong communication and stakeholder management skills, with the ability to engage architects, engineers, technology leaders and business stakeholders.

• Ability to balance security requirements with business innovation, scalability and operational needs.

If you are an experienced Security Architect looking to expand your exposure across enterprise and emerging technologies, we would love to hear from you.

Apply now or reach out for a confidential discussion.

Pam Lim

Morgan Mckinley Pte Ltd

EA Licence No: 11C5502 | EAP Registration No: R1106192