Senior Ui/ux Developer

Job Overview We re hiring a Senior UI UX Developer to design and build user interfaces for an AI-first data-centric platform You ll own the end-to-end experience for chat assistive workflows human-in-the-loop HITL approvals and explainability views sources rationales The ideal candidate blends product sense with strong frontend engineering accessibility and design-system rigor-shipping fast usable and secure interfaces Key Responsibilities Product UX Flow Design Define user journeys for discovery answer approval action craft low high-fidelity prototypes and interaction specs HITL Explainability UI Build approval modals and review panes that summarize intent scope impacted systems and sources subgraph rationale ensure clear confirm reject flows with auditability Chat Workspace Interfaces Implement responsive chat workbench UI message streaming citations error states and retries support role-based views and guardrail feedback Component Library Design System Establish reusable components tokens theming and documentation maintain consistency accessibility and performance across surfaces Frontend Engineering Ship production SPAs with robust state data fetching routing optimistic updates and skeleton loading patterns Accessibility Quality Enforce WCAG-aligned semantics keyboard navigation focus management and contrast write unit e2e tests and visual regressions Telemetry Experimentation Instrument UX metrics latency drop-offs feature flags and A B hooks partner on dashboards for usability and adoption Collaboration Delivery Work with analysts on acceptance criteria with backend AI engineers on contracts and with security on SSO entitlement UX Participate in code reviews and release rituals Required Skills Frontend Stack Expert in React TypeScript modern state data tools and routing Styling Systems CSS expertise Flex Grid component libs and utility frameworks e g Tailwind MUI Ant design tokens theming and responsive design API Integration Strong REST WebSocket SSE integration schema-driven development OpenAPI JSON Schema error handling and pagination streaming patterns Testing Quality Jest React Testing Library Cypress Playwright story-driven development Storybook or similar visual regression testing Security Auth UX OIDC OAuth2 SSO flows CSRF XSS mitigations secure handling of tokens session state and role-aware UI controls Performance Profiling and optimization bundle splitting memoization virtualization Core Web Vitals awareness and perceived-latency improvements Tooling Git-based workflows CI CD familiarity lint format type-safety discipline strong documentation and design-handoff skills Figma Good to Have Skills Explainability Data Viz Charts tables and graph visualizations e g Recharts D3 Cytoscape js Sigma js for sources subgraphs and call graphs AI UX Patterns Prompt response UI nuances citation rendering safety guardrail feedback messaging and evaluation review panels Design Ops Design token pipelines theme packs multi-brand support and cross-repo component publishing Storybook Nx Turborepo Observability Frontend tracing metrics OpenTelemetry JS UX analytics Segment GA4 and event taxonomy design Feature Delivery LaunchDarkly Flagsmith canary experimentation hooks and remote config This role is ideal for a hands-on developer who can turn complex reasoning and approval workflows into fast accessible and trustworthy experiences-while building the component foundations others can reuse