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Aporeon interview preparation

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Full-Stack Product Features

Forms & Contracts

Form validation, error mapping, API contracts, and frontend/backend boundaries.

4 drillsPractice one at a timeOrdered pathConcept question

Recommended start

Form Validation Boundary

Explains how client-side validation, server-side validation, DTOs, domain rules, and user feedback work together.

Medium~7 minStep 1 of 4

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1Form Validation BoundaryRecommended startExplains how client-side validation, server-side validation, DTOs, domain rules, and user feedback work together.Concept questionMedium~7 min.NETASP.NET CoreNext.jsPractice 2

Practice order

4 drillsOne at a time

1Form Validation BoundaryUp next / Medium / ~7 min
2Validation Error MappingMedium / ~7 min
3Feature ContractMedium / ~7 min

Validation Error MappingExplains field-level and form-level error mapping from API responses into a usable frontend form experience.Concept questionMedium~7 min.NETASP.NET CoreNext.js

Practice

3Feature ContractExplains how to design DTOs, response shapes, UI needs, API compatibility, and frontend/backend ownership for a feature.Concept questionMedium~7 min.NETASP.NET CoreNext.jsPractice

4Next.js BFF BoundaryExplains when a Next.js route layer helps with cookies, tokens, aggregation, and UI-specific API adaptation.Concept questionHard~9 min.NETASP.NET CoreNext.jsPractice

4

Next.js BFF Boundary

Hard / ~9 min

Forms & Contracts - Full-Stack Product Features | Aporeon