In most cases the role of the MCSE is that of an advisor. The process of earning an MSCE give an IT professional the ability to think outside the box. To be able to pass all of the tests involved in earning the certification, you have to be able to understand the OS’s and programs involved. As someone that used self study and hard work to earn my certs, I have earned the respect the respect that I receive from my peers where I work. It is not my MCSE that actually gets me this respect, but the fact that I am a sounding board that can give them sound advise and a good direction to find there way to a good outcome.
The role of someone with an MCSE will depend on the company that you work for. Many companies do not have a distinction between System Administrators and System Engineers and they are expected to do the same role with people having System Engineering experience taking the more senior level roles. When filling in the sys-admin role you’ll be handling server builds, setting up network shares, deploying software changes. When filling in the sys-eng role you’ll be designing solutions for home grown solutions as well as purchased solutions so that they fit within the Enterprise effectively.
Do keep in mind that having the MCSE certification will not guarantee you a job, especially a senior level position. These positions come with experience and successful project completion. While having an MCSE can help you get these positions, it is no substitute for experience.