The hiring staff is very helpful and polite. The first stage of interview was technical task. It requires more than 10GB of spaces just to store the raw data which they claimed can be completed in 3 hours but it took me 2 days to finish due to unnecessarily large files to play with. Considering where I come from, our internet speed are not that great but I still completed them and submitted! But I did not get the job and I requested for feedback since it took a lot of times to do so I would like to get feedback. It was a tedious technical task. They do not provide feedback, due to large number of applications (they say). I applied through LinkedIn and I was the only one who applied (maybe there are others from other websites as well but I do not know). My point is I believe the number of application is decent enough to get feedback from tedious technical task they gave. I am disappointed.