First I've got a written test at home to implement function that validates user input for their Wordy game. I did it over weekend and submitted to them. Then I was invited for on-site interview. On-site interview took 4 hours. First hour I was asked to write function that calculates price of the coffee in the coffee machine depending on size (small, large ...) and selection of condiments (sugar, milk, ...). You have to program it with interviewer sitting behind your back. Second hour - the same problem just conditions become slightly more complex - now price of condiments depends on the coffee cup size. Third hour I was asked to fix some issues in their artificially incorrect implementation of Set class. All this time you practically don't communicate with interviewers they just sit behind your back and watch at what you are doing. Last hour I've talked with project manager. It was free flowing discussion about my experience. At the end I didn't get an offer even so I don't exactly understand the reason. I was told that team was satisfied with my technical skills but didn't feel that I was exited (eager) enough to work for their company. Which sounds really weird to me.

Guidewire Codility tests evaluate coding skills, problem solving, and clean code practices.To solve algorithmic and real world problems, demonstrating efficiency, clarity, and structured thinking under time constraints.The iniital qualification round.