First HR screening round with the recruiter went well. After that, the 2 rounds that I moved on to both had the interviewers reschedule the interviews very last min. The hiring manager was borderline rude and unfriendly, but another cross functional manager after that was quite nice and gave constructive feedback when I presented my case study. Case study is a take home case study. They seem to have a tendency to disappear for long periods before following up when it serves their interest. Seems like they only have 1 recruiter in Singapore to handle all the candidates too.