Ended up having no feedback after 3rd round. Waste of my time. 1st round with one of the founders to go through the general HR questions. 2nd round with a take home code challenge to complete a fullstack project with both FE and BE required. I took 2 days to ensure it's well polished and get all the `nice to have` features delivered as well. It came back with quite quick follow up with 3rd round. There were 2 engineers interviewing me, with all questions trying to drill down deep into the tech details and system design. I suppose I answered most of them with quite confident answers. Then I got ghosted without any feedback for 3 weeks, I suppose it's a NO but I could never tell as I did not hear anything back from them afterwards.