The interview was started with 2 round of phone screening. the first one with HR (Singaporean) and the second one with Team lead (Thai). In general they focus on your attitude and your take on problem, however, they also test you on the knowledge which related to the position. Then in my case, I have a special video conference interview with one of the manager level which then screen me further, similar content but they will push you more this time. I passed through the last round and fly to Singapore HQ for the last interview with multiple interviewers. The content cannot be disclosed due to NDA agreement but all I can say is, you really need to know the product and your position role. The result was negative, I did not get accepted but overall, it was a good experience.