Perfectly acceptable during actual interviews. They ask and answer all the usual questions and are polite and friendly. They set you a task of creating a made-up project, which takes up at least a few days full-time work to complete (they do mention that there will be a task before the first face-to-face interview, but not that you'll have to go away and then come back and present it). Including a phone conversation, it is a three stage interview process. However, between interviews they almost never got back to me when they said they would. I had to re-connect with them each time to receive an update (this happened about 4x), including almost a week after the final interview to find out that I didn't have the job. This would be annoying behaviour with any potential employer, but was especially so with them as their task was so time and effort consuming (an entire weekend spent researching and putting together a 16 page proposal and accompanying PPT). I really couldn't tell whether they were just very disorganised or just had utter disregard for my time and efforts. My advice: be sure to be looking for other jobs whilst applying here and don't take them at their word - if they say they'll "get back to you on Wednesday" for example, what they actually mean is: you should start chasing them for an answer on Thursday, and they'll reply properly to that the following Tuesday.