XERO API Integration for .NET App

I need a developer to connect to the XERO API and retrieve basic contact details using a .NET Framework 4.x Windows application with private application authentication.

Requirements:
- Familiarity with XERO API
- Experience with .NET Framework 4.x
- Knowledge of private application authentication

Ideal Skills and Experience:
- Proficient in .NET development
- Prior experience with API integration
- Understanding of XERO's data structure and endpoints

Please provide examples of similar work done.