Rviewer challenges for companies

Amazing real-world tech challenges as never seen before

No more algorithmic tests. Our Tech Mentors have designed engaging and effective challenges that developers love.

Dreadful Tomatoes Challenge

Spotlist API Challenge

Vending Machine Challenge

iBull API Challenge

DeliverApp Challenge

Our challenge library

Back-end

Spotlist API wit Node.JS

Develop an alternative to the Spotify API that lets indie artists easily manage their playlists.

4 h

Javascript
Node.JS

Middle
Senior

Difficulty Medium

See this Challenge

Back-end

Event Emitter

Create an event emitter that lets you launch asynchronous events to teammates.

1 h

Javascript
Vanilla JS

Senior

Difficulty Medium

See this Challenge

Back-end

Optional: A new Hope

A new hope was born with the Java 8 release that might be the final weapon against the Empire, called the Optional.

3 h

Java

Middle
Senior

Difficulty Medium

See this Challenge

Full stack

DeliverApp

Implement a web app that lets users order snacks from a pub.

4 h

TypeScript
Node.JS
Vue

Middle
Senior

Difficulty Medium

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Font-End

Find Four Game

Create a two-player connection board game, in which the players choose a color and then take turns dropping colored tokens into a grid.

3 h

JavaScript
React

Middle
Senior

Difficulty Intermediate

See this Challenge

Front-end

Dreadful Tomatoes with React

Build a web app that lets users view and rate the latest blockbuster movies.

3 h

JavaScript
React

Jnuior
Middle
Senior

Difficulty Medium

See this Challenge

Back-End

Safebox API with JS/TS

Create a digital safe deposit box that lets users add items and keep them safe from peepers.

4 h

JavaScript
Node.JS

Middle
Senior

Difficulty Hard

See this Challenge

Front-end

Dreadful Tomatoes with Angular

Build a web app that lets users view and rate the latest blockbuster movies.

4 h

TypeScript
Angular

Junior
Middle
Senior

Difficulty Medium

See this Challenge

Back-end

Spotlist API with TS

Develop an alternative to the Spotify API that lets indie artists easily manage their playlists.

4 h

TypeScript
Express
Mocha
Express
Node JS

Junior
Middle
Senior

Difficulty Medium

See this Challenge

Back-End

Vending Machine with .NET

Create a seamless coffee vending machine experience that replaces old-school vending machines.

3 h

.NET
.NetCore

Junior
Middle

Difficulty Medium

See this Challenge

Back-end

Safebox API with Java

Create a digital safe deposit box that lets users add items and keep them safe from peepers.

4 h

Java
Spring

Middle
Senior

Difficulty Hard

See this Challenge

Back-End

Vending Machine with PHP

Create a seamless coffee vending machine experience that replaces old-school vending machines.

3 h

Junior
Middle

Difficulty Medium

See this Challenge

Back-End

iBull API with Python

Implement an API that lets users buy and sell actions on the stock market.

4 h

Python
Flask

Middle
Senior

Difficulty Easy

See this Challenge

Back-End

Gallery Tracking Optimizer

Create an API that allows companies with an ecommerce to generate a customizable and optimizable product gallery.

3 h

Python
Django

Middle
Senior

Difficulty Intermediate

See this Challenge

Back-End

Fully-connected API with Python

Implement your connected developer API & follow best practices on Python

2 h

Python

Middle
Senior

Difficulty Hard

See this Challenge

Back-End

Vending Machine with Java

Create a seamless coffee vending machine experience that replaces old-school vending machines.

3 h

Java

Junior
Middle

Difficulty Medium

See this Challenge

Back-End

iBull API with TS

Implement an API that lets users buy and sell actions on the stock market.

4 h

TypeScript
Node JS

Middle
Senior

Difficulty Medium

See this Challenge

Back-End

Gallery Tracking Optimizer

Create an API that allows companies with an ecommerce to generate a customizable and optimizable product gallery.

3 h

Python
Flask

Middle
Senior

Difficulty Intermediate

See this Challenge