I did an online test that I signed an NDA for. It was not the hardest possible, but not easy either. You should revise everything you can for it, which is my advice.
The following metrics were computed from 233 interview experiences for the Bending Spoons Software Engineer role.
Bending Spoons's interview process for their Software Engineer roles is fairly selective, failing a large portion of engineers who go through it.
Candidates reported having very good feelings for Bending Spoons's Software Engineer interview process.