Cabify Software Engineer I interview questions

Recruiter sent me the code challenge repository - 2 weeks finishing the challenge. Then recruiter called me to give feedback (It was good) and explain further steps. The confirmation of next step never come. I asked many times by email and 2 weeks after I received an email from recruiter told me that all open positions were filled. Please, don't waste the time of candidates.

The process was quite long. First they asked me to do a pretty long coding challenge that took me several days full time. Probably the biggest coding challenge I've ever made. After that, I was invited to the three one-hour interviews in a row. This part was interesting as I was asked about things that I like to talk about. And then, just a generic email of rejection without a simple word of feedback. I invested a lot of my time on this interview and I was expecting at least some kind of constructive feedback so that I can do better in other processes in this company or others. This is a perfect example of how HR people and software engineers make potential customers hate their company. From now on, I wish Uber get rid of Cabify or that the Spanish government crush them with all kind of legislation burdens.