Optimize My Complex Codebase

I’m completely stuck on a class assignment that has grown far beyond what I can comfortably handle, so I’m reaching out for expert help. The brief is straightforward: I already have a fully working solution, but it desperately needs code optimization... (Budget: $250 - $750 USD, Jobs: Coding, Debugging, Performance Tuning, Programming, Software Development, Software Engineering, Technical Documentation, Version Control Git)