Frondend Engineer (Angular/React)

This is not a marketing website or a consumer app. The screens you build are operationally critical - finance reviewers use them to approve payments, resolve invoice exceptions, and configure integrations across client organisations. You will work in React or Angular with TypeScript, integrate with AWS-hosted APIs, and collaborate closely with backend engineers, AI engineers, and finance domain SMEs to deliver interfaces that are precise, performant, and genuinely usable by non-technical finance operations teams.

• Build and maintain the Human-in-the-Loop (HITL) worklist UI - enabling finance reviewers to view queued tasks, inspect AI agent recommendations with full supporting context, take approval or rejection decisions, delegate, and trigger escalations with SLA visibility.
• Develop the exception management dashboard - real-time exception queues filtered by type, aging bucket, workflow, and client, with drill-down into individual exception detail, resolution history, and lifecycle tracking.
• Build the connector configuration and tenant onboarding UI - allowing implementation consultants to set up ERP connections, configure company codes, and map fields between source systems and the canonical data model using a visual drag-and-drop mapper.
• Implement the platform administration UI - covering approval matrix configuration, business rules management, user and role assignment, notification preferences, and SLA threshold settings per tenant.
• Build reporting and analytics dashboards surfacing key KPIs - STP rate, first-pass match rate, exception aging distribution, rework rate, and Pareto analysis - with tenant, workflow, and date range filters and chart drill-down.
• Implement real-time UI updates using WebSockets or Server-Sent Events (SSE) to keep worklists, exception queues, and workflow status indicators live without full-page refreshes.
• Integrate with AWS Cognito for authentication and enforce role-based access control in the UI - ensuring tenant isolation, approver role restrictions, and screen-level permissions are correctly applied.
• Collaborate with AI and backend engineers to surface LLM-generated recommendations, confidence scores, and agent reasoning clearly in the UI - helping human reviewers make faster, better-informed decisions.
• Ensure consistent component design across the platform using a shared component library or design system - maintaining visual consistency, accessibility, and reusability across all screens.
• Implement client-side observability - error tracking, performance monitoring, and usage analytics - to support continuous UX improvement across client deployments.

• 5+ years of frontend engineering experience with strong proficiency in React or Angular and TypeScript.
• Solid experience with state management - Redux or Redux Toolkit (React), NgRx (Angular), or equivalent - for managing complex, multi-step UI state.
• Strong experience building form-heavy, data-intensive enterprise UIs - multi-step forms, configurable tables, inline editing, bulk actions, and complex validation.
• Experience consuming RESTful APIs and handling asynchronous data flows - loading states, error boundaries, pagination, and optimistic updates.
• Hands-on experience with data visualisation libraries - Recharts, Chart.js, D3, Highcharts, AG Grid, or Angular equivalents - for operational dashboards.
• Solid understanding of web performance fundamentals - lazy loading, code splitting, virtualised lists, caching strategies, and bundle optimisation.
• Experience integrating with AWS Cognito or similar identity providers for authentication, token management, and role-based UI access control.
• Familiarity with AWS frontend services - CloudFront, S3 static hosting, API Gateway, and Amplify.
• Experience working with design systems or component libraries (Material UI, Ant Design, PrimeNG, or custom equivalents) and maintaining UI consistency across a large application.
• Strong grasp of accessibility standards (WCAG 2.1) for enterprise application UIs.

• Prior experience building UIs for Finance and Accounting operations - invoice processing, payment approvals, reconciliation dashboards, or exception management workflows.
• Familiarity with displaying AI or LLM outputs in a UI - confidence scores, recommendations, highlighted evidence, and explainability cues for human reviewers.
• Experience with micro-frontend architecture for large-scale platform applications spanning multiple teams.
• Knowledge of audit trail and compliance requirements - understanding how user actions must be captured, displayed, and exportable for regulated finance environments.
• Understanding of Finance and Accounting KPIs - STP rate, first-pass match rate, exception aging - and how operational teams use dashboards to manage performance.
• Experience with end-to-end testing frameworks - Cypress, Playwright, or Protractor - for enterprise UI test coverage.
• Familiarity with AWS Amplify for accelerating frontend integration with AWS backend services.