iOS Build for React Native App

I need an experienced developer to build and deploy my React Native Expo application on iOS. All development work is complete; you only need to handle the build, add it to TestFlight for external testing, and submit to the App Store.

Requirements:
- Experience with React Native and Expo
- Proficient in iOS build processes
- Familiar with TestFlight and App Store submission
- Apple Developer account, certificates, and provisioning profiles are ready

Ideal Skills:
- Mobile app deployment experience
- Attention to detail
- Strong communication skills for coordination

Please provide:
- Estimated timeline
- Relevant experience