Nubank Software Engineer interview questions

Las entrevista tecnicas apuntaban a 3 temas principales, concurrencia, sistemas distribuidos y paralelismo sobre todo brindar soluciones a los problemas reales que tienen en la empresa

Code Challenge — Authorizer You are tasked with implementing an application that authorizes a transaction for a specific account following a set of predefined rules. Sample usage $ cat operations { "account": { "activeCard": true, "availableLimit": 100 } } { "transaction": { "merchant": "Burger King", "amount": 20, "time": "2019-02-13T10:00:00.000Z" } } { "transaction": { "merchant": "Habbib's", "amount": 90, "time": "2019-02-13T11:00:00.000Z" } } $ authorize < operations { "account": { "activeCard": true, "availableLimit": 100 }, "violations": [] } { "account": { "activeCard": true, "availableLimit": 80 }, "violations": [] } { "account": { "activeCard": true, "availableLimit": 80 }, "violations": [ "insufficient-limit" ] }