Analysis/evaluation and reverse engineering of C++ system

I have a system written in C++. I want a C++ expert who can evaluate the code quality and also reverse engineer the code and create an architectural diagram(s) for the system. Evaluating the code quality includes compiling the code on CentOS and checking the system against quality measurements such as potential memory leaks etc. The system has little documentation (manual) and being able to understand the architecture by looking at the code is very crucial. The system is rather large system that needs strong understanding of memory management, networking, and so on so having experience with large C++ low-level programs is necessary. Please let me know if you have any questions.