3D Model of Generator Enclosures from 2D Drawings

I am looking to hire a Freelancer to create a 3D model of generator enclosures from existing 2D drawings. I have a preference for the final file format to be in STEP, and am looking for basic level of detail on the final modeled product. However, I trust your expertise in terms of what modeling software will be used to make the project a success. Please let me know if you have any questions and I look forward to working with you.