I'm a 3 years software engineer in France and I'm getting 29k€ (tax excluded) per year. With current exchange rate that makes SV guys getting paid 10 times more than me. Where's the onion ?
However, I don't know your job but 29k€ seems a bit at the lower end of the scale to me, at least for IT. Have you looked at websites like glassdoor.fr what's the mean salary for your position? From what I know the first years are highly dependent on your diploma, but after a few years it shouldn't be effective anymore.
Edit: and as @chrischen says, IT engineers are not much valued in France. I'm pretty sure you've heard about the expression "pisseur de code" (literally, someone who pees code). I'm also pretty sure you've met "entrepreneurs" who had a "great idea" and who "only need" an intern to implement it --but surely they got the idea, the IT guy is just an operating man so he shouldn't get credit, even though is idea is 100% about IT services (and, probably, shitty).
Ask your employer first how much it costs to pay you that. It's probably much more than you think. The LE people get paid <=3x as much as you and that's easily justified with SV salaries in general and their expertise.
Why?