London, England, United Kingdom Hybrid

EY is hiring a Core Banking Architect

As a Core Banking Architect, you will drive the evolution of critical financial systems by defining target-state architectures and enabling secure, interoperable, and intelligent platforms. Your work will shape how core and adjacent domains—such as customer, ledger, lending, and treasury—are modernised through strategic roadmaps, whether via incremental transformation or full replacement.

Key Responsibilities

  • Define and own the future architecture of core banking platforms, including domain models, API and event contracts, and data ownership frameworks
  • Guide engineering teams in building resilient, compliant systems that safely expose logic and data for AI integration
  • Establish clear architectural patterns for microservices, event-driven interactions, and cloud-native deployment using containers and scalable infrastructure
  • Lead design governance to ensure non-functional requirements—security, performance, availability, and observability—are met across delivery cycles
  • Embed AI-ready practices, including secure data pipelines, test automation, and risk controls for non-deterministic components
  • Translate business outcomes into technical strategies, acting as a bridge between executive stakeholders and delivery teams
  • Support business development through solution design, proposal input, and mobilisation of new initiatives
  • Mentor junior architects and promote reusable assets, design patterns, and architectural discipline across teams

Qualifications and Experience

You bring at least eight years of experience in solution or domain architecture, with deep exposure to core banking modernisation in regulated environments. Expertise in domain-driven design, API and event-based integration, and cloud-native platforms is essential. You are skilled at leading technical stakeholders at senior levels and producing clear, actionable architectural documentation.

Preferred candidates will have worked across multiple core banking vendors and integrated systems such as general ledger, risk engines, and data platforms. Experience establishing architecture review boards and governance frameworks for multi-vendor delivery teams is a strong advantage.

Technology Environment

The role leverages modern architectural practices including domain-driven design, event-driven architecture, microservices, containerisation, and cloud platforms. Focus areas include secure data exposure, test harness development, non-functional requirement engineering, resilience, security, observability, and controlled release governance.

Work and Culture

This position operates in a hybrid model, offering flexibility in where and how work gets done. You'll join a globally connected, inclusive organisation that values diverse perspectives and empowers individuals to innovate and improve systems with purpose. The culture emphasizes continuous learning, coaching, and shaping the future of financial services with confidence.

Required Skills
domain-driven designAPI integrationevent-driven architecturemicroservicescontainerscloud platformsresilience engineeringsecurityobservabilityrelease governancestakeholder leadershiparchitecture documentation domain-driven designAPIsevent-driven architecturemicroservicescontainerscloudAI-ready patternssecure data exposuretest harnessesNFR engineeringresiliencesecurityobservabilityrelease governancesolution architecture
About company
EY
EY es una firma global líder que ofrece servicios de Auditoría, Consultoría, Estrategia y Transacciones e Impuestos, con una red integrada por más de 280.000 profesionales en 150 países del mundo. Nuestro propósito es construir un mundo mejor de negocios para nuestra gente, para nuestros clientes y para nuestras comunidades.
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Job Details
Department Information Technology
Category other
Posted 2 months ago