As a current GSOC Manager, the questions for me were fairly easy. Overall, not a terrible experience. I also now realize that the jobs they post can be misleading as I was under the impression it was at their company HQ but it seems to be for a client contract for their own GSOC. ASK IF A GUARD CARD IS REQUIRED. I had a feeling this job description was just icing on a cake covering up a job that involved actual security guard work.
Their technical stack is a cake walk and the job seems easy to pick up if you take it. Overall, I cant say I was impressed with professionalism. Just a bunch of basic questions no scenarios asked.