Mobile App Security Penetration Testing

I'm seeking a professional penetration tester for my mobile app, which is available on both iOS and Android. The focus of the testing should primarily be on:

- Application Security: Identifying vulnerabilities within the app itself.
- Network Security: Assessing the app's resilience against potential network attacks.

The ideal freelancer for this project should have extensive experience in both application and network security testing, with a deep understanding of the intricacies of mobile app security. A proven track record of successfully identifying and mitigating potential security threats in mobile applications is highly desirable.