studying and working at the same time

Hello All

My name is Rodrigo , i am an italian brazilian citizen.
Probably next year i am going to study telecom engineering in Universidad Politecnica de Madrid.
My question for you all is, is it easy/medium/hard/impossible to WORK and STUDY at the same time, specially if i am doing a hard course that is engineering?

btw: I am an eletronics technician (2yrs degree), i have a+ and n+ certifications and some experience in telecom companies (satellite networks.

Otherwise, if i couldn`t work, i think i would spend a lot of money living all by myself.

Muchas gracias a todos
Rodrigo Marino

Rodrigo-
Its not only VERY difficult to work and study at the same time- but rarely done. Especially if you're thinking of trying to work within your field while going to school. And what you're planning on studying isn't a walk in the park!

Good luck!