APK Modification for Performance Monitoring

I'm looking for an expert who can modify my APK file to capture HTTP traffic via Fiddler. This is for an E-commerce app.

Key Requirements:
- The main purpose of the modification is to monitor app performance, specifically network latency.
- Experience with Fiddler and APK modification is a must.
- Understanding of E-commerce app architecture would be a plus.

Please provide your past experience with similar projects in your bid.