CollabCodeTech/backend-challenges

A public list of open-source challenges from jobs around the world

10,034

130 commits

updated Feb 4, 2026

README

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 - 1	Node.js, PHP, Java or Ruby	Code →
🇭🇰	AfterShip - 2	Node.js, MongoDB	Code →
🇨🇦	AlayaCare	C++	Code →
🇫🇷	AirCall - 1	Ruby & Rails	Code →
🇫🇷	AirCall - 2	Any Language & Any Framework	Code →
🇺🇸	Ambulnz	(Node.js or Ruby) & Any Framework	Code →
🇧🇷	Anota AI	Node.js, Express, Mongo DB	Code →
🇬🇧	Apolitical	Node.js, Express, Docker	Code →
🇧🇷	B2W - 1	Java or Elixir	Code →
🇧🇷	B2W - 2	Java, Spring Boot	Code →
🇧🇷	Bossabox	Any Language & Any Framework & Web API	Code →
🇧🇷	Brainn - 1	Elixir	Code →
🇧🇷	Brainn - 2	Any Language & REST API	Code →
🇧🇷	ClickBus	Java, Spring Boot, REST API	Code →
🇧🇷	CodeRockr	Any Language & Any Framework	Code →
🇭🇺	CodingSans - 1	Node.js, Typescript & Koa, Express or Fastify	Code →
🇭🇺	CodingSans - 2	Node.js, Typescript & Koa or Express	Code →
🇧🇷	Creditas	Any Language & Any Framework	Code →
🇧🇷	Cubo Network	Any Language & Any Framework	Code →
🇧🇷	DevPartner	C-Sharp, Entity Framework, Asp.net & Web API	Code →
🇧🇷	DinDigital	PHP, Laravel, Docker & Rest API	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 Language & Docker	Code →
🇧🇷	GetNinjas - 2	Ruby, Rails & Any Database	Code →
🇩🇪	Gigs	Go or Ruby	Code →
🇧🇷	Goomer	Typescript & Fastify or Express	Code →
🇧🇷	HurbCom	Any Language & Any Framework	Code →
🇧🇷	iCasei	Ruby, Rails, Go, SQLite, MongoDB & Docker	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 →
🇧🇷	Kinvo - 3	C#	Code →
🇭🇰	Lalamove - 1	Node.js, REST API & Any Testing Framework	Code →
🇭🇰	Lalamove - 2	Go, Java, PHP or Node.js & Docker	Code →
🇭🇰	Lalamove - 3	Go, Java/Kotlin, Node.js, Swift, PHP or Python	Code →
🇬🇧	MoonPig - 1	.NET	Code →
🇬🇧	MoonPig - 2	Node.js, Typescript & Express	Code →
🇧🇷	Olist	Python or Go	Code →
🇧🇷	Oli Saúde	Any Language & Any Framework	Code →
🇺🇸	Ontraport	Any Language	Code →
🇧🇷	Orbital - 1	PHP, Laravel	Code →
🇧🇷	Orbital - 2	Node.js	Code →
🇲🇽	ORCA Grc	Java, Hibernate	Code →
🇺🇸	Origin Financial	Any Language	Code →
🇯🇵	Paidy	Scala	Code →
🇨🇦	Paytm Labs - 1	(Machine Learning) Java or Scala & Hadoop or Spark	Code →
🇨🇦	Paytm Labs - 2	Any Language	Code →
🇧🇷	Perfect Pay	PHP, Laravel	Code →
🇧🇷	PicPay	Java (Spring Boot), PHP (Lumen) & (MySQL or MongoDB)	Code →
🇧🇷	RedFoxTech	Node.js, REST API & Any Database	Code →
🇧🇷	Riderize	Node.js & GraphQL	Code →
🇳🇬	Rise Vest - 1	Node.js, Typescript & Express or Go, PostgreSQL, Redis, Docker & S3/Cloud Storage Provider	Code →
🇳🇬	Rise Vest - 2	Node.js, Typescript, Express, PostgreSQL, Redis & Docker	Code →
🇳🇬	Rise Vest - 3	Node.js, Express & PostgreSQL	Code →
🇬🇧	SamKnows	PHP & MySQL	Code →
🇬🇧	SamKnows	PHP, Symfony & Docker	Code →
🇳🇴	Schibsted - 1	Java or Kotlin	Code →
🇳🇴	Schibsted - 2	Java, Spring Boot	Code →
🇧🇷	Senior Sistemas	Any Language, Any Database, REST API	Code →
🇧🇷	Senior Sistemas	Java, REST API	Code →
🇧🇷	Somar Metereologia	Python, REST API & AWS or Flask	Code →
🇧🇷	Stone Payments	Go	Code →
🇳🇱	Travix	Any Language	Code →
🇺🇸	Uber	Any Language	Code →
🇧🇷	UOL Host - 1	Java & Any Framework	Code →
🇧🇷	UOL Host - 2	Java or Kotlin & Spring Boot	Code →
🇸🇪	Volvo Cars	Any Language	Code →
🇧🇷	Wirecard Brasil	Any Language, REST API	Code →
🇨🇳	Wiredcraft	Node.js, Any Framework, Any Database, REST API	Code →
🇧🇷	Woovi - 1	MongoDB, NodeJS, Koa & GraphQL	Code →
🇧🇷	Woovi - 2	Node.js, Typescript & Koa	Code →
🇧🇷	Zé Delivery	Any Language, REST API or GraphQL	Code →

Inspiration

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

License

MIT © CollabCode

backend-challenges

challenges

coding-challenges

interview-test

job-challenge

jobs

knowledge

Project health

Overall

2.9/10

Maintained

0/10

Code review

1/10

OpenSSF Scorecard

Significant stargazers

Hung Viet Nguyen

687 followers · starred Dec 2021

Flavio Miyamoto

38 followers · starred Jan 2020

Olivia Kinnear

29 followers · starred Aug 2022

Vinícius Müller

67 followers · starred Dec 2020

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