Backend Challenges

Want to test your knowledge using real jobs challenges? Here is a public list of open-source challenges from jobs around the world.

Feel free to contribute! Only open-source challenges please!

	Company	Stack	Test
🇬🇮	Addison Global - 1	Java or Scala, Any Framework & REST API	Code →
🇬🇮	Addison Global - 2	Java 8+, Akka HTTP or Spring Boot & REST API	Code →
🇰🇪	Africa's Talking - 1	Scala, Regex	Code →
🇰🇪	Africa's Talking - 2	ASP.NET MVC, REST API, SQL Server	Code →
🇭🇰	AfterShip	Node.js, PHP, Java or Ruby	Code →
🇭🇰	AfterShip	Node.js	Code →
🇭🇰	AfterShip	Node.js	Code →
🇭🇰	AfterShip	Node.js	Code →
🇭🇰	AfterShip	Node.js, MongoDB	Code →
🇨🇦	AlayaCare - 1	Python, Flask, SQLite	Code →
🇨🇦	AlayaCare - 2	PHP, Silex, MySQL	Code →
🇨🇭	Axpo Group	Python	Code →
🇺🇸	Busbud	Ruby	Code →
🇺🇸	Busbud	JavaScript/TypeScript, API Design	Code →
🇫🇷	AirCall	Ruby & Rails	Code →
🇫🇷	AirCall	Any Programming Language/Framework	Code →
🇫🇷	AirCall	Any Programming Language/Framework	Code →
🇺🇸	Ambulnz	(Node.js or Ruby) & Any Framework	Code →
🇧🇷	AmeDigital	Kotlin, Scala, Java	Code →
🇧🇷	Anota AI	Node.js, Express, Mongo DB	Code →
🇬🇧	Apolitical	Node.js, Express, Docker	Code →
🇧🇷	BCredi	Java or Ruby	Code →
🇧🇷	B2W	Java or Elixir	Code →
🇧🇷	Bossabox	Any Programming Language & Any Framework & Web API	Code →
🇧🇷	Brainn	Elixir	Code →
🇧🇷	ClickBus	Java, Spring Boot, REST API	Code →
🇧🇷	CodeRockr	Any Programming Language & Any Framework	Code →
🇭🇺	CodingSans	Node.js, Typescript & Koa, Express or Fastify	Code →
🇧🇷	Creditas	Ruby, Python or Kotlin	Code →
🇧🇷	Cubo Network	Any Programming Language & Any Framework	Code →
🇧🇷	DevPartner	C-Sharp, Entity Framework, Asp.net & Web API	Code →
🇧🇷	DinDigital	PHP, Laravel, Docker	Code →
🇧🇷	DogHero	Ruby, API	Code →
🇺🇸	Eaze - 1	Node.js or .NET Core	Code →
🇺🇸	Eaze - 2	.NET, Quartz & Tests	Code →
🇧🇷	Entria	Node.js, Koa.js, REST API and GraphQL	Code →
🇧🇷	Estante Virtual	Ruby, REST API	Code →
🇧🇷	FCamara - 1	Java, Rest API	Code →
🇧🇷	FCamara - 2	Node.js, React, Rest API	Code →
🇧🇷	FCamara - 3	.NET, Entity Framework, Rest API	Code →
🇧🇷	Foton Tech	Node.js, GraphQL, MongoDB, Typescript	Code →
🇧🇷	GetNinjas - 1	Any Programming Language & Docker	Code →
🇧🇷	GetNinjas - 2	Ruby, Rails & Any Database	Code →
🇩🇪	Gigs	Golang or Ruby	Code →
🇧🇷	Goomer	Node.js, REST API, MySQL or Postgres	Code →
🇧🇷	HurbCom	Any Programming Language & Any Framework	Code →
🇧🇷	iCasei	Ruby, Rails & JavaScript	Code →
🇺🇾	Ingenious	Ruby, .Net, Node.js or Python	Code →
🇧🇷	Kinvo - 1	C#, REST API	Code →
🇧🇷	Kinvo - 2	Typescript, Node.js, REST API or GraphQL	Code →
🇧🇷	Olist	Python or Golang	Code →
🇧🇷	Oli Saúde	Any Programming Language & Any Framework	Code →
🇺🇸	Ontraport	Any Programming Language	Code →
🇧🇷	Orbital	PHP	Code →
🇲🇽	ORCA Grc	Java, Hibernate	Code →
🇺🇸	Origin Financial	Any Programming Language	Code →
🇧🇷	PagarMe	Node.js, REST API	Code →
🇨🇦	Paytm Labs - 2	Any Programming Language	Code →
🇧🇷	Perfect Pay	PHP, Laravel	Code →
🇧🇷	Petlove	Ruby, Rails & Any Database	Code →
🇬🇧	PhotoBox	.NET	Code →
🇧🇷	PicPay	Java (Spring Boot), PHP (Lumen) & (MySQL or MongoDB)	Code →
🇧🇷	RedFoxTech	Node.js, REST API & Any Database	Code →
🇧🇷	Riderize	Node.js & GraphQL	Code →
🇳🇬	Risevest	Node.js, Express, Postgres	Code →
🇳🇬	Risevest	Node.js (TypeScript & Express) or Golang, Postgres, Redis, Docker	Code →
🇳🇬	Risevest	Node.js, TypeScript, Express, Postgres	Code →
🇬🇧	SamKnows	PHP	Code →
🇳🇴	Schibsted	Java or Kotlin	Code →
🇧🇷	Senior Sistemas	Any Programming Language, Any Database, REST API	Code →
🇧🇷	Somar Metereologia	Python, REST API & AWS or Flask	Code →
🇺🇸	StackPath	Golang	Code →
🇧🇷	Stone Payments	Elixir	Code →
🇳🇱	Travix	Any Programming Language	Code →
🇺🇸	Uber	Any Programming Language	Code →
🇧🇷	UOL Host	Java & Any Framework	Code →
🇸🇪	Volvo Cars	Any Programming Language	Code →
🇧🇷	Wirecard Brasil	Any Programming Language, REST API	Code →
🇨🇳	Wiredcraft	Node.js, Any Framework, Any Database, REST API	Code →
🇧🇷	Zé Delivery	Any Programming Language, REST API or GraphQL	Code →
🇳🇬	Worksquare	Node.js(Express)/Laravel(PHP)/Django or Flask(Python)	Code →
🇹🇷	Teknasyon	Golang/Node.js/PHP, Kafka, Docker, Git	Code →
🇧🇷	Anota AI	Node.js, Express.js, AWS S3, AWS SQS, MongoDB	Code →
🇬🇧	Reach Industries	Golang, Docker, Kafka	Code →
🇪🇬	Bosta	Any Programming Language, Docker	Code →
🇬🇧	Moonpig	Node.js	Code →
🇬🇧	Moonpig	.NET	Code →
🇺🇸	Form3	Golang	Code →
🇺🇸	Form3	Golang	Code →
:ch:	Fastwork	Golang	Code →
🇵🇹	Unbabel	Python, Golang	Code →
🇨🇦	RareCircles	Golang	Code →
🇬🇧	Cuvva	Golang	Code →
🇸🇬	GuardRails	Any Programming Language	Code →
🇸🇬	GuardRails	Node.js	Code →
🇧🇷	HVAR	Python, FastAPI	Code →
🇧🇷	HVAR	Any Programming Language	Code →
🇸🇬	SPH Media	Golang, Docker, SQL/NoSQL	Code →
🇨🇭	Nanocorp	Node.js, Express, MongoDB, Docker	Code →
🇺🇸	Ingram	Golang, Docker	Code →
🇩🇰	Unity Technologies	Golang	Code →
🇨🇦	Perkuto	Any Programming Language/Framework, MySQL/PostgreSQL, REST, JSON	Code →
🇫🇷	Tailwarden	Golang, AWS Lambda	Code →
🇺🇸	Vizion	Typescript, Node.js, Postgres	Code →
🇺🇸	Pana	Javascript, Node.js	Code →
🇺🇸	Pana	SQL/NoSQL	Code →
🇬🇧	Datapane	Python	Code →
:gr:	Magicul	Typescript, Node.js	Code →
🇺🇸	Lana	Golang	Code →
🇬🇧	BuffUp	Golang, gRPC, Postgres	Code →
🇬🇧	BuffUp	Golang, gRPC, DynamoDB	Code →
🇮🇳	Mindship	Golang/Node/Python/Ruby	Code →
🇬🇧	LifeWorks	PHP/Node/Python	Code →
🇧🇷	HurbCom	Javascript/Golang/PHP/Node/Python	Code →
🇦🇹	Fiskaly	Golang	Code →
🇦🇹	Fiskaly	Node.js	Code →
🇬🇧	BBC	Java/C++/Python	Code →
🇬🇧	BBC	Golang/Java/Python/Javascript/Scala/Kotlin	Code →
🇺🇾	Crunchloop	Any Programming Language/Framework	Code →
🇭🇰	Lalamove	Golang/Java/Node.js/PHP	Code →
:spain:	Holded	PHP	Code →
🇬🇧	LifeWorks	Python/Node.js/PHP	Code →
🇺🇸	Kippa	Any Programming Language	Code →
:germany:	Thermondo	Any Programming Language	Code →
🇪🇬	Illa	Any Programming Language	Code →
:germany:	Door2Door	Python/Ruby/Kotlin/Javascript	Code →
🇮🇳:	Give	Any Programming Language	Code →
🇮🇳:	Give	Any Programming Language	Code →
🇺🇸	Kensu	Golang	Code →
🇺🇸	Checkout	Golang	Code →
🇺🇸	Checkout	Python	Code →
🇺🇸	Checkout	Java	Code →
🇺🇸	Checkout	C#	Code →

Inspiration

Inspired on Felipe Fialho's frontend-challenges. Kudos!

License

MIT © CollabCode