CodeSubmit Library
Real-world coding challenges for 124+ languages, frameworks, and roles
Assess what matters: practical engineering skills in repositories, with Git, tests, and realistic requirements. Start from a proven challenge, then tailor it to your stack and hiring bar.
Draft with AI
Can't find the right fit? Describe the role and we'll draft the challenge.
Use Challenge Creator to outline a Take-Home, Byte, or CodePair tuned to the stack, seniority, and hiring signal you need.
Kotlin
R
Haskell
MATLAB
Solidity
Nuxt.js
Unity
TensorFlow
PyTorch
Kubernetes
PostgreSQL
MongoDB
Redis
GraphQL
Nginx
Elasticsearch
Python
Django
Bootstrap
Docker
React
Vue
Backbone
Android
Angular
Node.js
iOS
JavaScript
TypeScript
Dart
Ruby
Java
Scala
PHP
Go
C#
C++
Elixir
Elm
Nim
Clojure
Perl
React Native
SQL
AngularJS
Ember
Svelte
Gatsby
Next.js
Flutter
AngularDart
Flask
Express
Nest
Hapi
Sails
Meteor
Ruby on Rails
Sinatra
Play
Spring
Ktor
Laravel
Symfony
Yii
CakePHP
CodeIgniter
.NET
WordPress
Swift
Rust
C
Full Stack
DevOps
Preact
Adonis
AlpineJS
RedwoodJS
Total.js
Bottle
Gin
CherryPy
Falcon
TurboGears
Tornado
Phoenix
Pyramid
FastAPI
Lumen
Fastify
LoopBack
Relay
Grails
Hanami
Actix
QA & Automation
Blockchain
Data Science & Engineering
Yew
Smithy
CodePair
JuliaCodePair
BashCodePair
LuaCodePair
ErlangCodePair
PythonCodePair
JavaScriptCodePair
TypeScriptCodePair
RubyCodePair
JavaCodePair
ScalaCodePair
ElixirCodePair
PHPCodePair
GoCodePair
CCodePair
C++CodePair
C#CodePair
ClojureCodePair
RustCodePair
SwiftCodePair
DCodePair
DartCodePair
ReactCodePair
Objective-CCodePair
OCaml