C# Revit Rebar Automation

I need a focused C# add-in that taps straight into the Autodesk Revit API to automate rebar placement. The goal is simple: with a single command the plug-in should populate beams, columns, and walls with... (Budget: ₹600 - ₹1500 INR, Jobs: API Development, AutoCAD, Automation, C# Programming, C++ Programming, Revit, Software Development, WPF)