I applied through referral, the process took about a week.
I had a formal exchange with the CEO before receiving a technical assessment.
I have been told that it was a must for me to be proficient with Angular 2 and Ionic Framework.
I received a technical assessment in Angular 1.x.x - a very old version - which is in no way comparable to Angular 2.
The test itself was quite un-fun and boring on top of being irrelevant to the offer (probably because it was outdated?), but quite simple if you know a little about Angular 1... and graphic design for some reasons.
The second part was a Google questionnaire, with a bunch of random questions more or less relevant.
I sent an email to the founder asking for details to which he never responded. He then later inquired why I didn't take the test...
The whole process left me with the impression that the job was more targeted towards developers despite being labelled as "engineering", as the focus is primarly put on being proficient with a very narrow set of technologies rather than actual programming abilities.