The word confuses me. I looked it up and it seems to basically mean a politician who actually knows about things outside of politics. Yet the word is almost exclusively used in a pejorative sense.
A technocrat can technically (heh) be a full-time politician, but the idea -in a nutshell- is to limit a position of power to people with relevant education.
Example, you'd require a medical degree to be a Minister of Health and Care Services.