collabcodetech / backend-challenges

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

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 →
🇨🇦	AlayaCare - 1	Python, Flask, SQLite	Code →
🇨🇦	AlayaCare - 2	PHP, Silex, MySQL	Code →
🇫🇷	AirCall	Ruby & Rails	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 Language & Any Framework & Web API	Code →
🇧🇷	Brainn	Elixir	Code →
🇧🇷	ClickBus	Java, Spring Boot, REST API	Code →
🇧🇷	CodeRockr	Any Language & Any Framework	Code →
🇭🇺	CodingSans	Node.js, Typescript & Koa, Express or Fastify	Code →
🇧🇷	Creditas	Ruby, Python or Kotlin	Code →
🇧🇷	Cubo Network	Any 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 Language & Docker	Code →
🇧🇷	GetNinjas - 2	Ruby, Rails & Any Database	Code →
🇩🇪	Gigs	Go or Ruby	Code →
🇧🇷	Goomer	Node.js, REST API, MySQL or Postgres	Code →
🇧🇷	HurbCom	Any 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 Go	Code →
🇧🇷	Oli Saúde	Any Language & Any Framework	Code →
🇺🇸	Ontraport	Any Language	Code →
🇧🇷	Orbital	PHP	Code →
🇲🇽	ORCA Grc	Java, Hibernate	Code →
🇺🇸	Origin Financial	Any Language	Code →
🇧🇷	PagarMe	Node.js, REST API	Code →
🇨🇦	Paytm Labs - 1	(Machine Learning) Java or Scala & Hadoop or Spark	Code →
🇨🇦	Paytm Labs - 2	Any 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 →
🇳🇬	Rise Vest	Node.js (TypeScript & Express) or Go, Postgres, Redis, Docker & S3/Cloud Storage Provider	Code →
🇬🇧	SamKnows	PHP	Code →
🇳🇴	Schibsted	Java or Kotlin	Code →
🇧🇷	Senior Sistemas	Any Language, Any Database, REST API	Code →
🇧🇷	Somar Metereologia	Python, REST API & AWS or Flask	Code →
🇺🇸	StackPath	Go	Code →
🇧🇷	Stone Payments	Elixir	Code →
🇳🇱	Travix	Any Language	Code →
🇺🇸	Uber	Any Language	Code →
🇧🇷	UOL Host	Java & Any Framework	Code →
🇸🇪	Volvo Cars	Any Language	Code →
🇧🇷	Wirecard Brasil	Any Language, REST API	Code →
🇨🇳	Wiredcraft	Node.js, Any Framework, Any Database, REST API	Code →
🇧🇷	Zé Delivery	Any Language, REST API or GraphQL	Code →

Inspiration

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

License

MIT © CollabCode

backend-challenges's Issues

Could we get a seniority level for each challenge?

Hey @joviane!
First of all, thank you for creating this project, I think this is a good way to give someone a roadmap or things to build when they're bored.

What do you think about creating a column to show the challenge's seniority level?

ex: Challenge A -> Junior Level
Challenge B -> Mid/Senior

Maybe contributors that already made the challenges could help us rank them.

Link checker report

Summary

Status	Count
🔍 Total	127
✅ Successful	124
⏳ Timeouts	2
🔀 Redirected	0
👻 Excluded	0
❓ Unknown	0
🚫 Errors	1

Errors per input

Errors in README.md

• https://www.gcpglobal.com/: Timeout
• https://ri.b2w.digital/: Timeout
• https://www.bcredi.com.br/: Failed: error sending request for url (https://www.bcredi.com.br/): error trying to connect: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:../ssl/statem/statem_clnt.c:1913: (unable to get local issuer certificate)

Full Github Actions output

Amaro test not found

What is happening

The link to the Amaro company test does not work.

como posso ajudar aqui?

ooiii @joviane @dimiro1 @filhodanuvem @ColabCodeTech

alguém me ajuda? como posso ajudar aqui?

Link checker report

Summary

Status	Count
🔍 Total	122
✅ Successful	118
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	0
❓ Unknown	0
🚫 Errors	4

Errors per input

Errors in README.md

• https://www.chama-app.com.br/: Failed: error sending request for url (https://www.chama-app.com.br/): error trying to connect: dns error: failed to lookup address information: Name or service not known
• https://wirecard.com.br/: Failed: error sending request for url (https://wirecard.com.br/): error trying to connect: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:../ssl/statem/statem_clnt.c:1913: (Hostname mismatch)
• https://fotontech.io/: Failed: error sending request for url (https://fotontech.io/): error trying to connect: dns error: failed to lookup address information: Name or service not known
• https://www.olisaude.com.br/: Failed: HTTP status client error (404 Not Found) for url (https://www.olisaude.com.br/)

Full Github Actions output

Link checker report

Summary

Status	Count
🔍 Total	122
✅ Successful	121
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	0
❓ Unknown	0
🚫 Errors	1

Errors per input

Errors in README.md

• https://ontraport.com/: Failed: error following redirect for url (https://go.ontraport.net/cir?f=https%3A%2F%2Fontraport.com&a=3&q=): too many redirects

Full Github Actions output

[backend-challenges](https://github.com/CollabCodeTech/backend-challenges)

backend-challenges

Originally posted by @samuelbarrionuevo in #39 (comment)

iFood Challenges with broken link

The Code button from the iFood Challenges are leading to a page that does not exist anymore

Link checker report

Summary

Status	Count
🔍 Total	132
✅ Successful	131
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	0
❓ Unknown	0
🚫 Errors	1

Errors per input

Errors in README.md

• https://www.getninjas.com.br/: Failed: HTTP status server error (503 Service Unavailable) for url (https://www.getninjas.com.br/)

Full Github Actions output

Bcredi challenge quebrado

Olá, o desafio da Bcredi no link https://github.com/bcredi/teste-backends está quebrado.
O desafio da clickbus no link https://github.com/RocketBus/quero-ser-clickbus/tree/master/testes/backend-developer está quebrado.
Creio que seja interessante remover da lista.

Challenges

Add Bcredi Challenge

Add Bcredi company's backend challenge

Add Challenges in different countries

Most challenges here are from Brazil, please add Open Source backend challenges from other locations.

Just backend open Source challenges

Link checker report

Summary

Status	Count
🔍 Total	134
✅ Successful	133
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	0
❓ Unknown	0
🚫 Errors	1

Errors per input

Errors in README.md

• https://dindigital.io/: Failed: error sending request for url (https://dindigital.io/): error trying to connect: dns error: failed to lookup address information: Name or service not known

Full Github Actions output