Sanderson
Front End Architect
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UI Architect
Global Financial Services / Payments Client
Location: London - 4 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
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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
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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
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