UI Architect
Global Financial Services / Payments Client Location: London - 2 days per week Rate: £550-£570 per day Contract: 6 months initial IR35 Status: Outside IR35 Role Overview We are supporting a global financial services organisation operating in cross-border payments and emerging markets as they continue a large-scale technology transformation.
They are looking for an experienced UI Architect to lead the design and delivery of scalable, modern front-end platforms aligned to a microservices architecture. This is a hands-on architecture role with responsibility for defining standards, driving best practice and shaping the frontend ecosystem across multiple products. Key Responsibilities
Define and own frontend architecture across a microservices-based platform
Design scalable UI solutions aligned to API-first backend services
Establish reusable components, UI standards and enterprise design systems
Define integration approaches with RESTful and event-driven services
Ensure performance, security, and responsiveness across web applications
Embed CI/CD, testing, and DevOps best practices within frontend teams
Support containerised deployments using Docker and Kubernetes
Mentor engineers and provide technical leadership across UI development
Drive adoption of AI-assisted development approaches including prompt engineering and tools such as Copilot
Collaborate with product, UX, backend and DevOps teams across the full delivery lifecycle
Required Experience
Strong experience in UI or Frontend Architecture within complex environments
Expertise in React, JavaScript (ES6+), TypeScript, HTML5 and CSS3
Experience designing SPA or micro-frontend architectures
Strong understanding of API integration (REST, API gateway patterns, BFF)
Experience working in cloud environments such as AWS or Azure
Exposure to Docker, Kubernetes and CI/CD pipelines
Strong focus on performance optimisation techniques such as lazy loading and code splitting
Experience using AI development tools (e.g., GitHub Copilot) within engineering workflows
Nice to Have
Event-driven architecture experience (Kafka, async patterns)
Observability tools (Prometheus, Grafana, ELK)
Frontend security (OAuth2, JWT)
Automated testing frameworks (Cypress, Playwright, Jest)
Design systems and tooling (Storybook, Figma)
Experience in financial services, fintech, or payments environments
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.
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