Jumia Software Engineer Java Developer interview questions

There are two interviews (Technical and HR, but I am not sure). The technical exam is a HackerHank with four questions (two SQL.and two Java (Algorithm)). You have 60 minutes to finish the technical exam.

Interview with two phases , the first one is a one hour talk with questions regarding knowledge of Java , Hibernate , SQL and BackEnd technologies like Spring. At the end , a exercise is proposed to a scheduled date you decide, giving you 3 hours to do it. The second part is an exercise regarding microservices. Poorly described in one page , you'll have to implement it, once submitted you'll wait one week for a response. You won't have the right to defend what you've implemented , they either like it or not.