First, they will try to reach you after your CV sort listed, and they will send you the task to implement a small app.
The will give the UI screen from dribble (which is very small and hard to be seen with the naked eye) as your reference.
If you passed the small project task, you will be arranged to have a technical interview with the senior engineer there.
If you passed the technical test, you will be forwarded to the last interview section, which is with the CEO
Interview questions [1]
Question 1
They are asking you about a general concept of software engineering.
You can expect the questions are covering both data structure and the particular technology as per the position you apply to, for example, if you are applying for the android engineer position, you can expect the question is also covering the android stuff.