Solutions Architect: Debit Card & Core Banking Modernisation

Queen Square Recruitment Ltd; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Queen Square Recruitment Ltd is seeking an experienced Solution Architect to lead the end-to-end architecture of a debit-card modernisation and core-banking integration programme in a major UK banking environment.

You will own the architecture for debit-card and TM-Vault integration, define target-state designs, and govern artefacts across REST APIs, Kafka and batch processing. Strong Java/Spring Boot expertise and cloud/on‑premise experience are essential.

Qualifications

• Experience as a Solution Architect in Banking, Cards, Payments or Core Banking.
• Ability to define target-state architectures, designs and roadmaps.
• Expertise in API-driven, microservices, event-driven and batch processing patterns.
• Strong knowledge of Kubernetes, hybrid cloud and on-premises integration.
• Proficiency with Java/Spring Boot microservices and integration services.
• Experience with security controls, authentication and secrets management.

Responsibilities

• Own end-to-end solution architecture for debit-card and TM-Vault integration.
• Define target-state architectures, designs, interface specs and delivery roadmaps.
• Design integration patterns using REST, SOAP, Kafka and batch processing.
• Architect solutions across GCP, Kubernetes, hybrid cloud and on-premises.
• Lead architecture decisions on hosting, data movement, caching, resilience and observability.
• Produce architecture artefacts: HLDs, LLDs, ADRs and data flows.
• Collaborate with Product, Engineering, DevOps, Security and QA teams.
• Guide implementation of Java/Spring Boot microservices and integration services.
• Assess legacy constraints and design migration approaches.
• Manage cross-platform dependencies and architecture governance.

Skills

Solution architecture

Banking domain

API architecture

Microservices

Kubernetes

Cloud integration

Security & encryption

Data integration

Technical leadership

ADR governance

Tools

Apigee

HashiCorp Vault

Google Cloud Storage

OpenShift

Jenkins

Dynatrace

Job description

Queen Square Recruitment Ltd is seeking an experienced Solution Architect to lead the end-to-end architecture of a debit-card modernisation and core-banking integration programme in a major UK banking environment.

You will own the architecture for debit-card and TM-Vault integration, define target-state designs, and govern artefacts across REST APIs, Kafka and batch processing. Strong Java/Spring Boot expertise and cloud/on‑premise experience are essential.