Integration Architect, Banking, Hybrid

Integration Architect - Contract (6 Months)London (Hybrid) | £550/day (Outside IR35) We are currently seeking an experienced Integration Architect to join a high-profile programme delivering complex integration solutions across Accounts, Payments, and FX domains. This role will focus on shaping and evolving the integration architecture, ensuring seamless connectivity across multiple systems while driving modern, cloud-native best practices. Key Responsibilities: • Own and evolve the target integration architecture aligned to enterprise standards • Define and implement integration patterns across distributed teams • Design and deliver event-driven, API-first, and messaging solutions (NATS, REST) • Lead end-to-end integration delivery, including hands-on development where required • Produce key architecture artefacts such as blueprints, contracts, and ADRs • Engage with stakeholders to align cross-team integration initiatives Key Skills & Experience: • Strong experience with event-driven architecture and messaging systems (NATS, pub/sub) • Expertise in API-first design (REST, gRPC) and microservices architecture • Hands-on experience with Java / Spring Boot • Proven delivery of cloud-native solutions on AWS (ECS/EKS, SQS/SNS, API Gateway) • Experience delivering complex integrations within financial services (Payments, FX, Retail Banking) • Strong stakeholder engagement and communication skills Additional: • Experience with API governance and integration best practices • Knowledge of DevOps / CI-CD environments • Comfortable producing architecture documentation (C4, ADRs, diagrams) This is an exciting opportunity to join a major transformation programme, working with modern technologies in a collaborative, high-performing environment. Reasonable Adjustments: Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients. If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.