Manager - Banking Platform Architecture, TC FS

EY; Greater London; On-site; GBP 110,000 - 170,000; Full time

Job summary

EY is seeking a Manager – Banking Platform Architecture in London. Design cross-domain platform capabilities, including APIs, events, identity, observability, and guide reliability and cost controls to enable AI-ready scaling.

You will define interoperability patterns across the estate and collaborate with architects, product owners and engineering leadership to deliver scalable, secure digital platforms for financial services clients.

Qualifications

• Experience designing platform services and patterns across multiple delivery teams.
• Knowledge of identity, secrets, observability and operational controls.
• Strong collaboration with architects and engineering leadership.

Responsibilities

• Define platform services: API gateway, event mesh, identity/access, reference data, observability and developer tooling.
• Establish API/event patterns and domain contracts across core, channels, ledger, risk and data platforms.
• Contribute to technology strategy (build/buy, cloud/on‑prem) and IT operating‑model changes that improve the business of IT.
• Guide teams on reliability, security, compliance and cost; partner with TMOs on release governance and controls.
• Shape and deliver scalable, resilient, end‑to‑end solutions, ensuring designs are fully considered, robust and aligned to agreed architectural standards.
• Act as the conduit between business and technology functions; translate outcomes into clear design options and actionable plans.
• Provide high‑quality guidance and documentation to enable a rapid, secure path from design to build/run.
• Contribute to business development: shape proposals, provide solution credibility in pursuits, and support mobilisation of wins.
• Develop people and communities of practice; coach junior colleagues and embed reusable patterns, assets and playbooks.

Skills

Platform integration architecture

APIs & microservices

Cloud platforms

Security & reliability

Interoperability patterns

Collaboration with leadership

Job description

At EY, we’re all in to shape your future with confidence.

We’ll help you succeed in a globally connected powerhouse of diverse teams and take your career wherever you want it to go.

Join EY and help to build a better working world.

Manager – Banking Platform Architecture

Role highlights

• Design cross‑domain platform capabilities (APIs, events, identity, observability).
• Establish interoperability patterns and domain contracts across the estate.
• Guide reliability, security and cost controls to enable AI‑ready scaling.

The opportunity

At EY, you’ll have the chance to build a career as unique as you are, with the global scale, support, inclusive culture and technology to become the best version of you. We help Financial Services clients navigate complex, technology-enabled transformations. If you’re excited by solving hard problems in a fast‑moving environment, this is where your expertise makes a real impact.

Role purpose

Design and evolve the platform capabilities that connect domains and enable safe scaling of digital and AI on top of modernised cores. Define interoperability patterns, guardrails and reusable platform services to accelerate delivery with control.

Your key responsibilities

• Define platform services: API gateway, event mesh, identity/access, reference data, observability and developer tooling.
• Establish API/event patterns and domain contracts across core, channels, ledger, risk and data platforms.
• Contribute to technology strategy (build/buy, cloud/on‑prem) and IT operating‑model changes that improve the business of IT.
• Guide teams on reliability, security, compliance and cost; partner with TMOs on release governance and controls.
• Shape and deliver scalable, resilient, end‑to‑end solutions, ensuring designs are fully considered, robust and aligned to agreed architectural standards.
• Act as the conduit between business and technology functions; translate outcomes into clear design options and actionable plans.
• Provide high‑quality guidance and documentation to enable a rapid, secure path from design to build/run.
• Contribute to business development: shape proposals, provide solution credibility in pursuits, and support mobilisation of wins.
• Develop people and communities of practice; coach junior colleagues and embed reusable patterns, assets and playbooks.

Skills & experience – required

• Platform/integration architecture across APIs, events and microservices; understanding of cloud platform services.
• Experience defining patterns/guardrails and working with multiple delivery teams in parallel.
• Knowledge of identity, secrets, observability and operational controls.
• Strong collaboration with architects, product owners and engineering leadership.

Ideally, you’ll also have

• Exposure to FinOps, cost attribution and performance engineering.
• CIO advisory experience (strategy, sourcing, operating model).

Success measures (KPIs)

• Adoption of platform services and patterns; reduced integration cycle times.
• Improved reliability/SLOs and security posture.
• Reduction in duplicate solutions and tooling sprawl.

What we offer

A competitive rewards package, flexibility in how and where you work, coaching and feedback from engaged colleagues, and opportunities to develop new skills (including access to technology learning pathways).

About EY

As a global leader in assurance, tax, strategy & transactions and consulting services, EY uses its scale and expertise to help clients shape the future with confidence. We invest in training, opportunities and the creative freedom to make things better; the exceptional EY experience lasts a lifetime.

EY | Building a better working world

EY is building a better working world by creating new value for clients, people, society and the planet, while building trust in capital markets.

Enabled by data, AI and advanced technology, EY teams help clients shape the future with confidence and develop answers for the most pressing issues of today and tomorrow.

EY teams work across a full spectrum of services in assurance, consulting, tax, strategy and transactions. Fueled by sector insights, a globally connected, multi-disciplinary network and diverse ecosystem partners, EY teams can provide services in more than 150 countries and territories.