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Design a fullstack app with frontend focus

OpenAISoftware Engineer · Technical Screen
HardSoftware EngineerTechnical ScreenSystem Design

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Design a fullstack app with frontend focus evaluates requirements, scale assumptions, API/data design, architecture, trade-offs, failure modes, and rollout in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

Design a fullstack web application when the prompt explicitly emphasizes the frontend. Given a 2–3 page requirements document plus a demo (screenshots and an animation), outline: (

  1. Frontend architecture: framework choice, routing, component decomposition, state management, data fetching strategy (client/server/rendering model), error/loading states, accessibility, performance (code-splitting, memoization, virtualization), and testing. (
  2. API contract: define REST or GraphQL endpoints, request/response schemas, pagination, auth/session, and rate limiting; specify how the UI maps to these contracts. (
  3. Backend design: service boundaries, data model and storage, caching, background jobs, idempotency, observability, and scalability. (
  4. Deployment: CI/CD, environment config, canary/rollback. (
  5. Process: how you validate behavior against the demo, prioritize scope under time pressure, and collaborate on ambiguous requirements. Provide one critical user flow and describe the end-to-end sequence of UI actions and API calls.