Advanced Level C++ Expert Needed

I am seeking a skilled freelancer with a thorough understanding of all data structures including but not limited to: Arrays, Linked Lists, Stacks, Queues, Trees, Graphs, Sorting Algorithms and Searching Algorithms. Proficiency in C++ is essential for this project. The task involves solving complex, advanced level problems that would require innovative, out-of-the-box thinking. Therefore, relevant previous experience with complex algorithm problems would be very beneficial as well as excellent problem-solving abilities.