Role Overview
We are seeking a dynamic and forward-thinking Head of Enterprise Architecture - Security to lead the security architecture function across a largescale, highgrowth banking environment. This role is ideal for a leader who has grown from a deep engineering or enterprise architecture background into security-someone who can bridge application development, modern architectures, and security-by-design at scale.
The ideal candidate excels in secure application architecture, API security, and cloud-native environments, and can guide the bank's digital transformation securely while engaging confidently with Csuite and senior business stakeholders
Key Responsibilities
Enterprise Security Architecture Leadership
- Define and own the enterprise security architecture strategy, standards, and blueprints across the bank's technology landscape.
- Build scalable and secure architectures for core banking systems, customer platforms, and internal applications.
- Ensure security-by-design principles are embedded into engineering, cloud adoption, and digital initiatives.
Application & API Security
- Lead architecture design for secure applications, microservices, and high-volume APIs.
- Establish guardrails for API gateway configurations, identity federation, tokenization, and secure integration patterns.
- Conduct architectural reviews for critical customer-facing and regulatory-impact services.
Technology Innovation & Future Architecture
- Drive innovation in security-exploring modern approaches such as zero trust, confidential computing, secure AI patterns, and DevSecOps automation.
- Evaluate emerging technologies and provide guidance on adoption, risks, and architectural fit.
- Lead PoCs and pilot initiatives to improve resilience, scalability, and developer productivity.
Stakeholder Engagement & Governance
- Partner with senior stakeholders across Technology, Cybersecurity, Risk, and Business Units to align enterprise architecture with business outcomes.
- Present architectural recommendations and risk trade-offs to the architecture review board and executive committees.
- Provide leadership and coaching to architects and engineering teams.
Required Qualifications & Experience
- 12-18+ years in technology with strong grounding in engineering or enterprise architecture.
- Deep expertise in application security, API security, identity & access, and cloud-native architectures (AWS/Azure/GCP).
- Experience in large-scale banking or FSI environments, with complex regulatory and threat landscapes.
- Strong understanding of microservices, event-driven architectures, container security (K8s), and DevSecOps toolchains.
- Proven ability to design scalable architecture for high-volume, mission-critical systems.
- Excellent communication and influencing skills, including presenting to senior executives and regulators.
Argyll Scott Singapore Pte Ltd
EA License No. 16S8105
Koh Ching Wen (Xu Jingwen)
EA Reg No: R1108631
