Audio Cleanup for Radio Recording

I need an audio recording cleaned up. The main issue is background noise, specifically hum, buzz, or electrical noise.

Requirements:
- Remove background noise (hums, buzzes, electrical noise)
- Make voices clearer
- Adjust volume and sound balance

Ideal skills and experience:
- Proficiency in audio editing software
- Experience with noise reduction techniques
- Attention to detail
- Ability to provide a detailed project proposal