On Page seo

Hello, I run a straightforward website that provides services like 3D printing and laser cutting, and it's all in Slovak.

I've already selected some keywords and now I'm looking for someone to handle on-page SEO.

We also have a native Slovak speaker on our team who can verify the work.

How can you guarantee effective on-page SEO work in Slovak for this project, and possibly an off-page project after this is done successfully?