But seriously, it is kind of difficult and it depends on your definition of social media. Is Hacker News a social media to you for example?

I've had some great success in the past just posting my articles here. As you can see from my post history I'm not exactly "active", posting 6 times in the last year.

There is always the traditional routes of paying for targeted advertising, email campaigns and so on. However this depends on the type of "growth" you want. Does your blog have a comment section? If not you kind of need to post it somewhere for you to get any feedback whatsoever. If you are writing solely for the purpose of advancing your own career I struggle to see why the articles would be interesting to read for others. So I at least suggest having some other motivation than that.

I realise that my answer contains a lot of "ifs" but it is really hard to answer such a vague question without any particulars.