Revit Add-in Development

I'm looking for an experienced Revit programmer to help develop add-ins and create custom Revit families, specifically structural elements like beams and columns.

Key Requirements:
- Develop Revit add-ins/plugins
- Create custom Revit families for structural elements
- Custom tool creation within the add-ins

Ideal Skills and Experience:
- Proficiency in Revit API
- Experience in developing Revit add-ins
- Strong understanding of Revit family creation, especially for structural components
- Programming skills (C#, .NET, etc.)