Job DescriptionJoin Sumitomo Mitsui Finance Dublin Limited (SMFD) as a Threat Modelling and Data Security Architect, driving security-by-design across a complex hybrid IT landscape (on-prem, Azure, GCP, Kubernetes, SaaS, enterprise systems). This role is based in Dublin, with a relocation allowance of an additional month''s salary for candidates open to relocating. You will own and evolve the bank''s threat modelling program and data security architecture, embedding secure design principles early and delivering scalable, automated controls to protect assets and enable innovation.Sumitomo Mitsui Finance Dublin Limited (SMFD) is a wholly owned subsidiary of SMBC, serving as a Centre of Excellence for the bank''s universal banking business across EMEA. It provides technology and operational support aligned with SMBC''s growth, innovation, and transformation strategies.What you''ll do:

Lead security design reviews, assessing solutions against policies, standards, and best practices.Develop and maintain a Security Reference Architecture and reusable design patterns.Design and implement security controls to address risks, threats, and compliance needs.Own and mature the threat modelling program; identify and prioritize threats with mitigation strategies.Maintain a threat and countermeasure library and guide stakeholders in its application.Act as SME for data security, including classification, encryption, and access control.Develop data domain security controls aligned with data architecture strategies.Collaborate across IT, data, and engineering teams to embed security into projects and systems.What you''ll bring:

Strong knowledge of security frameworks (NIST CSF v2, ISO/IEC 27001, CIS Benchmarks).Proven expertise in secure design principles, architectural patterns, and SSDLC.Hands-on experience in Azure and/or GCP security within regulated industries.Experience in threat modelling and training non-security stakeholders.Knowledge of data security controls, encryption, and access management.Familiarity with architectural frameworks (TOGAF, SABSA) and data patterns (Medallion, Data Mesh).Legal right to work in the EU is mandatory.Note: All third-party applications will be managed by Robert Walters. Robert Walters Operations Limited is an employment agency and welcomes applications from all candidates. Location: Dublin, Ireland.

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