Hi,
you want to develop an operating system? I do not know any certification for that. You could have a look at the Windows Driver Kit (http://msdn.microsoft.com/en-us/windows/hardware/gg487428)
if you are interested in developing drivers for windows.
The windows development itself is done by microsoft internally so there are no public resources (AFAIK).
So if you are really interested in developing operating systems, you are more or less stuck to open source systems e.g. Linux, FreeBSD, NetBSD, OpenBSD, .... If you want to learn about operating systems, Minix is great. Andrew Tannenbaum build it for
teaching purpose and you can read his book to get deeply into it.
With kind regards,
Konrad