I think it depends. If you are educated as an engineer in all these languages, it will definitely be an asset. Many people claim proficiency in languages in which they are not educated in a technical field. For serious work, the interview will be conducted in that language and they will be eliminated.
While knowing a language is always helpful for travel and enjoyment, employment requires very specific skills.
Ask yourself, "In how many of these languages can I explain the four laws of thermodynamics?"
Don't forget the zeroth.
I am an aerospace engineer who managed international consultants. My first criterion for hiring was knowledge of the technical field. Knowing languages at the "basic university" level is useless.
If you are qualified in engineering in English, French, and Arabic it would be a plus. German and Russian would be good also if you could converse with clients on their level. In Philippines, I found that everyone who was technically qualified spoke English extremely well.
I discuss engineering matters in English, Russian and German, but I was not hired for my linguistic skills. I also read French and can understand thermodynamic discussions. French engineers and scientists (Sadi Carnot and others) did much fundamental work.
If I received a resume from you that stressed your languages and not your engineering, I probably wouldn't interview you. There are many people who are qualified in more than one language. They act as principals without interpreters or translators.
As with many technical people, I do mathematical calculations "in my head." I am not impressed with a 22 year-old expecting to enter the job market in the early 2020s. I understand there might be things that are delaying you and you might be planning for an advanced degree, but I think delaying further by learning languages would be counter-productive. Any good engineering school demands a heavy course load. Think about it.