Backend Code Challenges
Test your backend skills with our code challenges. Receive personalized feedback and apply for the best job offers as a backend developer!
Challenge by 
Safebox API
Create a digital safe deposit box that lets users add items and keep them safe from peepers.
Challenge by 
Spotlist API
Develop an alternative to the Spotify API that lets indie artists easily manage their playlists.
Challenge by
Gallery Tracking Optimizer
Create an amazing gallery and optimize it based on user interest.
Challenge by
Vending Machine with .NET
Create a seamless coffee vending machine experience that replaces old-school vending machines.
Challenge by
Unsafebox API
Create a digital safe deposit box that lets users add items and keep them safe from peepers.
Challenge by
Vending Machine with .NET
Create a seamless coffee vending machine experience that replaces old-school vending machines.
Challenge by
PrivaTo-Do
Create a To-Do list API where the tasks and all their history of changes are stored on a Blockchain.
Challenge by
iBull API
Implement an API that lets users buy and sell actions on the stock market.
Challenge by
Gallery Tracking Optimizer
Create an amazing gallery and optimize it based on user interest.
Challenge by 
Build a wall
Create the strongest wall of all time! Combine bricks and avoid instability!
Track by
E-wok
Create an online home delivery service for one of the most successful Wok restaurant chains, E-wok.
Challenge by
Cartfidential
Create an e-commerce shopping cart based on Blockchain, executing and storing processes in a decentralized way.
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I think it was an amazing experience because I went out of my confort zone and I have completed the challenge on time, I’m happy and now I have another app to show on my portfolio 🙂
Dreadful Tomatoes with React
I think it is a complete Front End Developer challenge, the considerations were clear, I could put in practice my skills, and I understood many things I had no idea. I can't wait for the next one.
Gallery Tracking Optimizer
I would like to congratulate you for the great work you are doing, this is my first challenge, but I will continue to fulfill more, I drew up with the best and thank them for growing this software software developer community
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