Cross-Platform App Testing Team

I'm seeking an experienced app testing team to rigorously test our application on both iOS and Android platforms. The app should be tested on the latest OS versions only.

The testing should include:
- Functional Testing: Ensure all features work as intended.
- Performance Testing: Assess speed, responsiveness, and stability.
- Security Testing: Identify vulnerabilities and ensure data protection.
- Flow Testing: Verify the app behaves as per the defined user flows.

Ideal Skills and Experience:
- Proven experience in mobile app testing
- Expertise in functional, performance, and security testing
- Familiarity with both iOS and Android ecosystems
- Ability to test on the latest OS versions
- Strong attention to detail and comprehensive reporting skills

Please provide a portfolio of similar work done. Looking forward to your bids!