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

2 languages

Ruby 11 assessments

TypeScript 1 assessment

Coming soon

in progress

Languages

C C# C++ Elixir Go Haskell Java JavaScript Kotlin PHP Python R Rust SQL Scala Swift

Web Frameworks

ASP.NET Core Django Express FastAPI Flask Laravel NestJS Phoenix Rails Spring Boot Symfony

Frontend

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

Mobile

Android Flutter React Native SwiftUI UIKit

Other

Docker GraphQL Terraform

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