Local relevance, built into the link.
Search engines use a country-code domain like .ie as a strong hint that a site is aimed at Ireland. When other Irish sites link to you, they reinforce that: your site is part of the Irish web, trusted by Irish businesses, and relevant to people searching on Google.ie.
That is why Irish link building is so effective for businesses selling in Ireland — local trades, clinics, solicitors, e-commerce shops and services competing for Irish searches. A handful of relevant .ie backlinks can say more about your market than hundreds of generic links from anywhere.
No one can honestly promise a Google ranking, and I won't. What I promise is real links from real .ie websites, placed in content that makes sense, with every one of them reported so you can check it.