Optasia Junior Data Engineer interview questions

Before the interview, I was contacted via phone to perform a behavioral test and a technical assignment were I had one week to complete them. Then an interview with HR and a senior data engineer took place online. The HR person was irrelevant , honestly she asked random questions with not much particular value. Then we continued with the senior data engineer where we discussed any problems with the project, overall a very pleasant experience. Although it seemed that I have all necessary skills , again for a junior position, I was told through an automated message that they wouldn't continue with my application. It made no sense and of course they don't provide reason. The interview experience was ok but the overall handling was not