Audio Enhancement Specialist Needed

I need an expert to refine my 1 hour 24 minutes audio recording for personal use. The recording has some background noise, and I need it professionally cleaned up.

Requirements:
- Remove echo and background noise (traffic sounds, human voices, static)
- High-quality clean-up with maximum enhancements

Ideal Skills and Experience:
- Professional audio editing experience
- Proficiency in audio enhancement software
- Attention to detail for high-quality output

Please provide samples of previous work and an estimated timeframe for completion.