Hello, Brice
I don't doubt many engineering students would welcome the help.
What I doubt is that you could ever get a position in a university here. I mean, teaching in a university is not taken lightly here. You must have a degree.
It is true that there are students who "help" in certain subjects, but they don't get a check art the end of the month. What is more, not even graduates, people who have a degree, will be paid untill they have completed some time as what is called "adscripto" here; a sort of "helper" too who works for free for some time, until they have proved themselves, so to speak.
Even medicine doctors, lawyers, accountants, architects, and people in many other professions that don't involve teaching skills have been taking courses in pedagogy and teaching lately because at least some basic knowledge of teaching is required these days even at university level. In many courses, people who didn't have the faintest idea about teaching used to stand in front of a class, call themselves teachers and "recite" whatever knowledge of a subject they might have. There is soooooooo much more to being a teacher; if that were all, then teachers wouldn't be needed and every student could learn on their own just by reading books at home. Having good knowledge of the subject you're going to teach is only the first step. Then, you must learn how to teach what you know. It involves the development of many skills, lots of reading, practice and time.
Look at me, for example. I'm a native speaker of Spanish. My Spanish is very good, above "average". I've studied Spanish grammar and literature, contrastive analysis (Spanish and English), linguistics; and I've learned how to teach a language (English). But, despite all that, I could never get a position in a university in my own country as a teacher of Spanish grammar, for example. Why? Because I don't have a degree in Spanish teaching, but a degree in English teaching.
Anyway, I'll gather the addresses and phone numbers of engineering schools and post them here for you in a couple of days. You can then contact them and see what happens.
Please don't get me wrong, I'm not saying you shouldn't come here. Actually, if you came to my city I'd be glad to be your "tourist guide" if you need one, or simply meet for a coffee. I'm only saying that education is not a game even when many people may think they can have a "paid vacation" in my country just because they are native speakers of English.
Regards,
Miriam