Data and algorithm integrity checking

I'm looking to have some data and algorithm integrity checking done. We work in the clinical aesthetics space looking to integrate AI solutions like facial recognition into our repertoire. We would need an expert to verify the integrity of the solutions we'd be interested in contracting with. Check their data sets will work for our purposes and how robust a solution it may be relative to competitive alternatives. I'm working with mixed data (text and images), and hoping to use Machine Learning algorithms for the project. I don't have a specific integrity check method in mind, so I'm open to suggestions. I need someone that is familiar with data integrity and can help me make sure that the algorithms I'm using and the data I'm working with are always producing accurate and reliable results. If you have the skills and the experience to make sure that the integrity of my data and algorithms are always being maintained, I would really appreciate having your help.