Probably not, or at least not much.
First, most of those links are likely nofollowed.
Second, at least as far as Google is concerned, they're making an effort to discount links that are "easy" -- in other words, they don't want any link you can create yourself, for free, to count for much in your favor.
This doesn't mean those links are worthless. Some of them may not be nofollow, and there may still be some "social validation" factor that the search engines take into account somehow. Beyond that, seeing your site in your profile may inspire some people who follow you to visit your site, which might bring you a small amount of direct traffic.
The main benefit to social media participation is just that... the participation
. If all you're doing is creating a bunch of profiles, but not doing
anything useful with those accounts, you're not going to get much benefit.
Use those accounts to build followers and establish yourself (and your company) as industry authorities. Build credibility and reach. That's the main thing social media is good for at the moment.