Android Blog App Development

I'm seeking an experienced mobile app developer to create a blog/content-sharing app for Android.

Key Requirements:
- User-friendly interface
- Secure user authentication
- Content categorization and tagging
- Offline reading capability
- Commenting and sharing features

Ideal Skills and Experience:
- Expertise in Android development
- Strong UI/UX design skills
- Experience with secure authentication methods
- Background in content management systems

Please provide samples of previous work and a timeline for project completion.