Snap Software Engineer - Front End interview questions

1st Stage: Had an initial chat with the engineering manager. Discussed my background and found out a bit more about the role. I specifically asked if the interview for the Front End role will be algorithmic or not, and was told that it will be adjusted for Front End. I was told that they adjust the interviews based on the candidate's background. 2nd Stage: The interviewer seemed to be surprised by my Front-end oriented background during the initial discussion we had before the interview started. It felt like they were expecting to interview someone for a generalist Software Engineer role instead. I was presented with a binary tree question (serialize/deserialize). I found the whole process to be disorganised from start to finish. I received a video interview invitation after the initial chat with the engineering manager, and then received an on-site invitation by HR as well before the video interview had even taken place! I found that quite confusing and when responding to HR asking to confirm this is a mistake, I never received a reply back. As far as the video interview goes, I was told that this would not be a "Crack the coding interview" type of interview, and that it will adjusted for Front End, thus I will not need to study Leetcode style data structures and algorithms. I was expecting a more JavaScript-based question to either build UI or data structures/algortithms but with a front end slant and in JavaScript. I was instead asked to solve a binary tree problem. As mentioned above, the interviewer seemed completely taken by surprise by the fact that I have a JavaScript background, as if they had never taken a look at my CV or they were simply not hiring for Front End and there had been some sort of misunderstanding. To sum up, both the 1st stage engineering manager and the 2nd stage interviewer were really nice, however I was disappointed with the entire process, it felt disorganised, something which I did not expect.

I have been contacted on Linkedin and told to book a screening interview as I might be a good fit for a job they have. I booked the call at midnight UK -4 pm USA. On the first call, they told that International calls don't work and we should book it again. I booked it back on the next week, and I have not been called or informed about why they didn't call. I contacted again, the next working day, with no response. I know many companies practice nothing, but coming from a big company