Becoming fluent

Hi, my name is Jodi. I live in a small town near Firenze (Italy). I've just received a Master's degree in Electronic Engineering and I would like to find a job abroad.

I understand oral English quite well, but need to practice in speaking, so I'm a little scared about job interviews.
Learning to read and write it's quite easy, but speaking is not easy at all. If I speak about simple things, I succeed at being fluent, but somentimes it happens that words can't come out of my mouth, 'cause if you don't practice every day, you forget words, and speaking seems like a cracked record.

I would like to find someone who can help me to practice English and I'll be more than happy to help him/her with Italian, and perhaps math, physics...

[Good work.]