I applied online. The process took 6 weeks.

• Intro call with a recruiter
• First live coding interview
• Second live coding interview
• System design
• Presentation about something interesting I've worked on

This would've been followed by an interview with the CTO if I passed.

The interview process overall wasn't too bad. However, after completing 5 interviews, and spending hours on preparation and the presentation, I got ghosted for almost 2 weeks just to receive an email saying "you recently completed your interviews with Helsing, please give us your feedback".

??? Do I really not even get the courtesy of a rejection email from the recruiter after spending so much time on this and waiting for your response before accepting another offer? Companies really need to respect the interviewees more.

Replicate a tool that prints out the structure of a nested directory.

Find a way to store a sequence in the most compact way possible. The sequence is essentially a list of characters, but only 4 different characters can appear.

Design a drone that scans crop fields to find rotten crops, streams the video to a farmer, and notifies them about the rot. This probably gets adjusted based on your level and specialization.