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2-3 weeks

Senior Frontend System Design

Product-scale architecture prompts with state, data, performance, and rollout tradeoffs.

Audience

Senior candidates who need to lead ambiguous frontend design interviews.

Outcome

Lead a 45-60 minute design conversation from requirements to architecture, tests, observability, and migration.

Practice Items

50 questions

Format Mix

System Design · 25 Debugging · 7 UI Component · 18

Practice Sequence

01Design an autocomplete searchShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignSenior50m 02Design an enterprise data tableShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignSenior50m 03Design a rich text editorShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignSenior50m 04Design a collaborative document editorShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignSenior50m 05Design a news feedShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignSenior50m 06Design a chat applicationShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignSenior50m 07Design a notification centerShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignSenior50m 08Design a dashboard builderShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignSenior50m 09Design a design system platformShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignSenior50m 10Design an image upload and moderation flowShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignSenior50m 11Design a video streaming surfaceShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignSenior50m 12Design a calendar scheduling appShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignSenior50m 13Design an e-commerce marketplace frontendShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignStaff65m 14Design a travel booking frontendShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignStaff65m 15Design an analytics dashboardShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignStaff65m 16Design a feature flag consoleShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignStaff65m 17Design an offline-first notes appShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignStaff65m 18Design a real-time incident dashboardShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignStaff65m 19Design a browser drawing toolShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignStaff65m 20Design a form builderShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignStaff65m 21Design a permissions management UIShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignStaff65m 22Design a settings and billing consoleShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignStaff65m 23Design a search results pageShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignStaff65m 24Design an AI chat workspaceShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignStaff65m 25Design a front-end observability SDKShows whether you can turn a broad product surface into a durable frontend architecture with clear contracts.System DesignStaff65m 26Practice: unit test a reducer with illegal transitionsShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.DebuggingMid35m 27Practice: mock server states with MSWShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentMid35m 28Practice: write Playwright reload recoveryShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentMid35m 29Practice: profile a slow React renderShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentMid35m 30Practice: debug a hydration mismatchShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.DebuggingMid35m 31Practice: measure Core Web Vitals regressionShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentMid35m 32Practice: test keyboard navigationShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentMid35m 33Practice: verify screen reader namesShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentMid35m 34Practice: write visual regression statesShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.DebuggingSenior45m 35Practice: debug a memory leak from listenersShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentSenior45m 36Practice: trace duplicate network requestsShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentSenior45m 37Practice: build a browser storage migration testShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentSenior45m 38Practice: audit bundle size growthShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.DebuggingSenior45m 39Practice: debug stale cache dataShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentSenior45m 40Practice: test optimistic update rollbackShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentSenior45m 41Practice: create incident notes for frontend outageShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentSenior45m 42Practice: instrument client error loggingShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.DebuggingSenior45m 43Practice: design feature flag cleanup testsShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentSenior45m 44Practice: load test polling behaviorShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentSenior45m 45Practice: verify CSP and XSS boundariesShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentSenior45m 46Practice: triage flaky E2E testsShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.DebuggingSenior45m 47Practice: write component contract testsShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentSenior45m 48Practice: debug race conditions in searchShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentSenior45m 49Practice: profile virtualized list jankShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.UI ComponentSenior45m 50Practice: test form validation accessibilityShows whether you can prove frontend behavior instead of relying on screenshots or manual confidence.DebuggingSenior45m