The two people who interviewed me are not proficient in English. I don't think they speak English regularly. I'm not a native English speaker but I have native proficiency in English. These guys struggled to understand what I was saying and I also struggled to understand what they were asking. An example is this question they asked me, "When you open IntelliJ and you click the Spring button, what happens?". After going back and forth with them, I finally figured they wanted to ask, "How does Spring Boot startup?". This would have been a straight forward question had it been asked by a proficient English speaker. My advice is they have people proficient in English interviewing, or at least have a proficient/native English speaker go through the interview questions. Ignoring the bad English, the interview questions were actually quite interesting and fairly challenging.