Android Utility Tool App Development

I'm looking for an experienced Android developer to create a utility tool app. The app's primary function is still to be determined, as I have not finalized the specific functionality yet.

Key Requirements:
- Develop an Android app tailored for utility purposes
- Ensure a user-friendly and intuitive interface
- Implement robust performance and security features
- Offer post-launch support and maintenance

Ideal Skills and Experience:
- Proven experience in Android app development
- Strong understanding of UI/UX design principles
- Familiarity with performance optimization and security protocols
- Good communication skills for project updates and feedback

Please provide examples of your previous work and a rough estimate of the timeline.