Best-in-class real-world coding tests

Challenge developers with practical problems they face day-to-day. Choose between tests created by experts from Stripe, Spotify, and other top companies or create your own!

Coding tests

Level... Junior Mid-level Senior

Category... Backend Data Embedded Frontend Fullstack Mobile

Technology... .net Android Angular C C# C++ Dart Django Expressjs Fastapi Flask Flutter Go Google colab Html Ios Java Jinja2 Js Jupyter notebooks Kotlin Laravel Nestjs Nextjs Objective-c Php Python Rails React React native Ruby Springboot Sql Swift Vite Vue

Backend

Interactive Presentation Backend - Level 1

Junior (3h) | Mid-level (2h) | Senior (1h)

Created by Rafa Paliwoda

Backend

Interactive Presentation Backend - Level 3

Senior (3h)

Created by Rafa Paliwoda

Backend

Interactive Presentation Polls & Votes Backend - Level 2

Mid-level (3h) | Senior (2h)

Created by Rafa Paliwoda

Backend

Interactive Presentation Polls Backend - Level 2

Mid-level (3h) | Senior (2h)

Created by Rafa Paliwoda

Backend

Lookup Service - Level 1

Junior (1h) | Mid-level (45min) | Senior (30min)

Created by Rafa Paliwoda

Backend

Lookup Service - Level 2

Mid-level (2h) | Senior (1h)

Created by Rafa Paliwoda

Backend

Lookup Service - Level 3

Senior (3h)

Created by Rafa Paliwoda

Backend

Transaction Management Backend - Level 1

Junior (3h) | Mid-level (2h) | Senior (1h)

Created by Rafa Paliwoda

Backend

Transaction Management Backend - Level 2

Mid-level (3h) | Senior (2h)

Created by Rafa Paliwoda

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