The Lead Enterprise Architect is the overall technical design authority for the greenfield build and the most senior architect on the Program. You will own the target-state architecture end to end — across business capability, application, data, integration, infrastructure and security domains — together with the transition path that takes the bank from a blank sheet to an authorised, operating institution. You will define the architectural principles and standards the Program works to, hold final design authority over the decisions that flow from them, and lead a team of domain and solution architects across delivery partners and vendors.

This is as much a leadership and influence role as a technical one. You will explain, defend and evidence the architecture to executive sponsors, risk and compliance functions, auditors and supervisory authorities — and hold the line on architectural integrity when commercial and schedule pressure argues otherwise.

Key Responsibilities

Target-State Architecture Own the end-to-end target architecture across business, application, data, integration, infrastructure and security domains, ensuring traceability from business capability to architectural component. Define and maintain the architectural roadmap and transition states, sequencing the build so each phase delivers a coherent, operable and regulator-ready increment; establish the minimum viable Day-1 architecture for licensing without structurally constraining later growth. Maintain the architecture as a living asset — principles, standards, reference models, as-built documentation and decision records — fit for audit and supervisory review at any point. Core Banking Platform and Application Landscape Lead the design and build of the core banking platform,



Design the surrounding-system landscape and its integration into the core — financial crime and compliance (KYC/KYB, sanctions and PEP screening, transaction monitoring, fraud), treasury, general ledger and finance, regulatory and management reporting, Determine the appropriate balance of configuration, extension and custom build, minimizing bespoke development where a platform capability will serve, and making the trade-offs explicit and defensible. Own the architectural relationship with platform and tooling vendors, including capability assessment, roadmap alignment, and the technical due diligence behind selection decisions. Payments, Correspondent Banking and Clearing Architect end-to-end correspondent banking and payment flows, including nostro/vostro account structures, cover payments, and the full transaction lifecycle from intake through clearance to settlement and posting. Design connectivity to payment and market infrastructures — SWIFT and ISO 20022 (MT to MX migration), SEPA and SEPA Instant, and RTGS/TARGET services — together with the scheme rulebook compliance, message transformation and reconciliation architecture that supports them. Define clearing, settlement and reconciliation patterns, straight-through-processing rates, and the controlled exception-handling and four-eyes release mechanisms that sit around them. Ensure the design supports the addition of new corridors,



rails and counterparties through configuration and controlled endpoints rather than repeated platform change. Data, Integration and Cloud Define the enterprise data architecture — canonical models, golden sources, master and reference data, data lineage, retention, and the reporting and analytics layer serving prudential, statistical and management reporting needs. Own the API and integration strategy, including event-driven patterns, contract-first interface standards, message integrity and idempotency, and the boundary contracts between architectural zones. Set the cloud and infrastructure architecture — landing zones, network segmentation, runtime and container strategy, infrastructure-as-code, observability, and EU data-residency controls. Architecture Governance and Design Authority Be an active member of program's architecture governance forum, responsible for the design-authority process, architectural decision records, exception and waiver handling, and compliance against agreed standards. Exercise final authority over design decisions, arbitrating between competing domain, vendor and delivery positions and holding accountability for the outcome. Set architectural standards, patterns and reference designs, and assure delivery against them through design reviews and gated checkpoints. Operate the governance model effectively in a multi-vendor context, ensuring end-to-end architectural coherence across systems integrators, platform vendors and tool-only providers. Leadership and Stakeholder Management Lead, mentor and develop a team of solution architects, setting technical direction and raising the standard of architectural practice across the Program. Act as the senior architectural voice with executive sponso

Skill Requirements

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📌 Senior Solution Architect (Comunidad de Madrid)
🏢 Hcl Technologies
📍 Comunidad de Madrid