What are the Top Freelance Link Building Experts for Hire?

Hey everyone, I’m considering hiring a freelance link building expert to boost my site’s SEO. But with so many options out there, I’m not sure how to choose. Has anyone here worked with a great freelance link builder? What skills or experience should I be looking for? And how do you evaluate their work? I’d love to hear about your experiences - good or bad - with hiring link building freelancers.