Hi

I'm working for a big telecommunication provider in Europe (https://bit.ly/2DuWb13) as a Banking software engineer and develop Software for big Banks. They company is very big and employs over 20k employees. But they are not operating international. I've studied at an average university of applied science. And got a bachelors degree in computer science. My gpa is 3.0. My ultimate goal is to get into the Insead MBA or LBS MBA Program. Now my questions:

- Is it bad for my career to switch to a smaller company (midsize or very small like 20 People)?
- I could get a job at UBS, Accenture, Credit Suisse with my experience. Would this be a better career move instead of staying in the telecommunications company to get into the MBA Program?

Thanks very much for your help!

(edited)