Senior Core Banking Architect - Strategy & AI-Ready Design

Ernst & Young Advisory Services Sdn Bhd; Greater London; On-site; GBP 120,000 - 180,000; Full time

Job summary

EY in London seeks a Senior Manager – Core Banking Architect to define target architectures for core banking transformations and lead multi‑vendor design governance. You will build AI‑ready access patterns and enforce non‑functional controls for resilient, compliant delivery.

You will own domain models and API contracts across customer, ledger, lending and treasury domains, guiding delivery teams and shaping roadmaps. Strong leadership and communication are essential for success.

Qualifications

• 8+ years in solution/domain architecture with significant core‑modernisation experience.
• Mastery of domain‑driven design, integration via APIs/events, and modern platform patterns (microservices, containers, cloud).
• Stakeholder leadership with CIO/Chief Architect/COO teams; crisp written architecture artefacts.
• Fluency in NFR engineering (resilience, security, observability) and release governance in regulated environments.

Responsibilities

• Define target architectures for core and adjacent domains (customer, ledger, lending, treasury) with clear API/event contracts and data responsibilities.
• Lead strategic optioning and roadmaps with credible delivery pathways.
• Govern design quality and NFRs (availability, performance, security, operability); manage design risks and decisions.
• Shape and deliver scalable, resilient, end‑to‑end solutions aligned to architectural standards.
• Act as conduit between business and technology; translate outcomes into design options and actionable plans.
• Provide high‑quality guidance and documentation to enable rapid, secure path from design to build/run.
• Contribute to business development: shape proposals and support mobilisation of wins.

Skills

Solution/Domain architecture

Domain-driven design

APIs/events

Microservices

Containers

Cloud

Stakeholder leadership

NFR engineering

Release governance

Job description

EY in London seeks a Senior Manager – Core Banking Architect to define target architectures for core banking transformations and lead multi‑vendor design governance. You will build AI‑ready access patterns and enforce non‑functional controls for resilient, compliant delivery.

You will own domain models and API contracts across customer, ledger, lending and treasury domains, guiding delivery teams and shaping roadmaps. Strong leadership and communication are essential for success.