Inspecting code for app project must be expert in React Native and Mongo DB

I am looking for an expert developer to inspect code in a React Native project. The code needs to have JS, React Native and Mongo DB expertise. The code needs to be tested before being delivered. This is a critical task and I am looking for someone who has expertise in the specific languages and can guarantee the code will be up to industry standards. the project is approximately 5 percent done you will need to also assure that as milestone payments are delivered code has progressed to that point.