I applied through a staffing agency. The process took 4 weeks. I interviewed at bidstack (London, England)
Interview
It was a 3 stage interview process. No technical tests or case study. Only chatted with different departments and they were all so nice. In the second interview they asked technical knowledge about the advertising sector and the relevant KPI's.
Interview questions [1]
Question 1
What is the biggest challenge in in-game advertising?