How can I learn the most technical and professional French?

If what you want is to go live and work in France , you will have to quickly improve your command of the language. For that, you have different options.
The first is to sign up for classes (either in a French academy in Madrid , a specialized organization, or private classes at home).
With a bilingual or native teacher, you will have the luxury of learning French at your own pace and becoming perfectly familiar with the pronunciation of the language. Whether you are beginners or have a certain base, you can find near you a large number of private teachers willing to offer you their services.
Another solution: carry out a language stay in a French-speaking country. This, from our point of view, is the most effective method. Of course, it is best that the stay is as long as possible so that you can live a full immersion experience.
Avoid using Spanish at all costs (however difficult it may be). Your goal, after all, is that you manage to express yourself in the best possible way in French.
Why don’t you take the opportunity to get to know a new country and live a unique learning experience?
You can also get in touch with specialized French learning organizations. In this way, you will complement your day-to-day learning (informal) with a regulated study (formal) that allows you to acquire a level certificate. How can I learn the most technical and professional French?