Amazon busts everyone down at least one or two pegs in title. A friend with extensive agency experience joined their creative team and when I saw his title I was shocked but he explained that's what they do everyone. He say this leads to people frequently introducing themselves to others by saying "I used to be title X at company Y".

SE1 is ridiculous for someone with 10 years experience as either they deserve a much better title or they didn't learn enough in the last 10 years and you shouldn't hire them at all.