DWG to Civil 3D Conversion for Land Development

I need a skilled professional to convert a DWG file into Civil 3D for a land development project. The Civil 3D file must include grading and terrain modeling.
I have a existing dwg file.
Requirements:
- Convert DWG to Civil 3D
- Include grading and terrain modeling
- Integrate existing previous design files

Ideal skills and experience:
- Proficiency in Civil 3D and DWG
- Experience in land development projects
- Strong grading and terrain modeling skills
- Ability to integrate previous design files seamlessly