Hello

Hello, I am Antonio, and I am here to learn correct my bad English

(I am here to improve my English)xD 

I need to improve it because of my future job. I am gonna going to be - I hope - a Telecommunications Enginnering.

Hi Antonio

I agree with David Martin's comments.

In UK English, you can say:

I am a telecommunications engineer...

Or, because it is shorter and easier to say:

I am a telecoms engineer.

Or,

I work in telecoms, as an engineer.

Good luck with your English studies and in your search for a job in the telecoms industry.