Urgent ArcGIS Plugin Development that will run on GstarCAD

I need an experienced .NET C# developer to urgently create an ArcGIS plugin for GstarCAD. Aimed at enhancing the CAD software's capabilities, this .NET plugin should include:
there is already ArcGis plugin that already works on AutoCAD , but i want one that can be created that can run on GstarCAD
- Data Sharing
- 3D Modeling
- Import/Export Features
- Other major functionalities related to CAD and GIS integration that is already in ArcGis that works on AutoCAD

The timeline is crucial, I require this as soon as possible.

Ideal Candidate:

- Proficiency in .NET and C# programming languages
- Demonstrable experience in ArcGIS platform, specifically plugin creation
- Familiarity with CAD softwares, especially GstarCAD and AuTOCAD
- Strong understanding of data sharing, 3D modeling, import/export functionalities in GIS environment
- Able to work under tight deadlines.