Coding Problems

Browse and solve coding challenges to improve your skills

TitleTagsCategoryStatusAction
Expenses Tracker API
Build an expenses tracker
webhooks
backend
easy
11%
2 hours
See
🚖 Uber - Surge Pricing Service
Real-time Pricing Based on Demand & Supply
🚖 Uber
microservices
backend
easy
20%
1 hour
See
Todolist API with authentication
Create a simple todo Rest API with features to add, complete, and delete tasks, protected by user authentication.
API
Authentication
backend
medium
0%
4 hours
See
Library management API
Build an API for a library to manage its catalogue, rentals and returns.
CRUD
API
backend
medium
0%
3 hours
See
🚖 Uber - Ride Request Service
Uber wants to optimize its ride dispatching algorithm.
🚖 Uber
microservices
backend
hard
50%
3 hours
See
Search Engine I
Get started on the first variant of building a search engine
search engine
algorithms
backend
easy
50%
3 hours
See
Hello World API
Get started with building your first Rest API using the technology of your choice.
Beginner
API
backend
easy
32%
1 hour
See
Discord rate limiting
​Protect Your Discord Servers from Raids with Rate Limiting​
rate limiting
backend
easy
100%
1 hour
See
📁 Dropbox File Upload API I
Upload and share files easily
backend
file uploads
📁 dropbox
backend
easy
33%
1 hour
See
Todolist API
Create a simple todo Rest API with features to add, complete, and delete tasks.
Express
Rest API
backend
easy
11%
1 hour
See
URL shortener
Create a url shortener API
in-memory storage
express
redirection
backend
medium
9%
4 hours
See
Real-Time Game Leaderboard
Implement an ELO rating system for a game leaderboard.
backend
leaderboard
backend
hard
67%
5 hours
See
🚖 Uber - Driver Management Service
Efficient Driver Assignment & Tracking
🚖 Uber
microservices
backend
medium
100%
3 hours
See
Identity Access Management API
IAM API: Centralized JWT-Based Authentication for Distributed Systems
authentication
jwt
📝 google docs
microservices
backend
easy
14%
1 hour
See
📝 Google Docs Real-Time Collaboration Service
Enabling Seamless Multi-User Document Editing
📝 google docs
microservices
backend
hard
0%
1 hour
See
📝 Google Docs Document Management API
Secure, Scalable and Collaborative documents.
📝 google docs
microservices
backend
medium
100%
1 hour
See