I often wished for some kind of professional certification scheme when I was interviewing for developers, because so many of the people I interviewed were just

I often wished for some kind of professional certification scheme when I was interviewing for developers, because so many of the people I interviewed were just wasting my time. It would have been a useful filter, so long as it were implemented well (which is a big if). Since then I'm not so sure. The definition of "developer" can get a bit murky. For instance I now work in an R&D team; the researchers need to be able to code up prototypes, but the important thing for them is to be good at research rather than coding.