The difficulties of SEO for multi-language site

Hello,

I am stepping up muy SEO game for my e-commerce site. I am writing weekly articles and using PBN's (20 links a month approx) with a well-reputed service in this forum.

The difficulty I'm finding is that my site is in English but the great majority of my clients are in Spain. I originally made the decision of writing everything in English as I wanted my brand to be an international firm. Most of my ranking keywords are in English too and only now I have started to write articles in Spanish too. Also, the PBN articles are written in English even when the keyword is in Spanish.

My site auto-translates to a number of languages including Spanish, but not the blog, so Google will find some articles in English and some in Spanish.

Anyone facing this issue? Will mixing English and Spanish in the same blog have a negative impact on my rankings?

From experience it definitely seems that a Spanish site, for example, linking to an English site will carry less weight than an English site linking to an English site. Not sure about part Spanish/part English. I would just go for it anyway.