Datadog Solution Engineer interview questions

I was contacted by a recruter who has viewed my LinkedIn profile to join Datadog Paris. 1° - phone interview with the HR (who works in Boston): * tell me about you * can you tell me more about your education? the projects you have done? * why do you want to become a solution engineer? 2° - phone interview with the team leader: * tell me about you * give me a work situation where you had to handle a difficult client * how do you see yourself in 5 years? * how do you process to learn a new programmation language? 3° - project (hiring challenge): cloud. It's divided in two parts: * create a Datadog environment (well explained in the PDF you will receive) * answer two client questions The project takes 8-10h to be done. You have 7 days to return it. Take your time to do it and write a good documentation. If you don't, you will not be able to move to the next step. 4° - on-site interview (4 interviews of 45min/1h per interview): * first interview: two solutions engineers. They explained what the work is. They expect that you present yourself, the projects you've done (ie your resume). * second interview: two software engineers. Presentation of a project you've done and explanation of the code. * third interview: coding interview on a white board (using any programming language you want). Two questions: 1° reverse a list. 2° Given a string containing different sentences with keys and a list of keys, find all the sentences which have the input keys in it (all of them) and return a list with the other keys in this selected sentences without any duplicate. They may ask you to give big O precisions. * fourth interview: team leader. The point is just to give a feedback about the interviews and to get yours.