Assessment catalog

What we test

Each assessment is a set of challenges where candidates rank multiple implementations of the same feature and explain their reasoning. No writing code — pure code judgment.

Available now

1 language

Ruby 10 assessments

Coming soon

in progress

Languages

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Backend frameworks

Ruby on Rails Django FastAPI Flask Laravel Symfony Node.js / Express NestJS Phoenix Spring Boot ASP.NET Core

Frontend

React Next.js Vue Nuxt Angular Svelte SvelteKit Solid.js Astro

Mobile

SwiftUI UIKit Kotlin Android React Native Flutter / Dart

Other

SQL GraphQL Terraform Docker

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