I applied through a recruiter. The process took 4 weeks. I interviewed at Sigma Technology (Sweden, ME) in Apr 2021
Interview
First HR interview
Then they send Kattis test with 3 levels of difficulty. After this probably you have an interview with one of the consultants to review those tests and talk about your experiences.
Interview questions [1]
Question 1
All technical questions are from here: https://open.kattis.com/