It was a task about an algorithm that needs to be implemented with C++ over the next 9hrs. They didn't want this to be shared, but you don't need any third party library only the C++ standard libraries.
I applied through a recruiter. The process took 1+ week. I interviewed at Thinkcell Learning Solutions (Berlin) in Aug 2023
Interview
This is a remote position.
The first step in their recruiting process was a home assignment. I didn't pass this step, but I was informed that next steps are a technical interview (in a video call).
Interview questions [1]
Question 1
Design a new object - some extension of a classic data structure s.a linked list, but with specific new algorithmic functionalities. You get 9 hours for solving it from home.