Optimize Revit Plugin Resource Usage

My existing Revit plug-in runs correctly but its data-processing routines consume far too much memory and CPU, especially on large project files. I need the code profiled, refactored, and re-compiled so... (Budget: €30 - €250 EUR, Jobs: API Development, AutoCAD, C Programming, C# Programming, C++ Programming, Performance Tuning, Revit, Software Development)