Link Building for Large Agency in US

There will be a trial period to find the right person for this role. Once we find the right person it would be a full time job as we have a lot of clients and we are growing rapidly. I want someone that actually knows what they are doing. Please send me examples of link building you have done for other clients so I can evaluate the quality of your work as I don't want to try every single candidate on this site and I need to narrow down the job search.