Android Utility App Development

I need an experienced Android developer to build a utility app focused on data collection. The primary data types are sensor data and location data.

Key Requirements:
- Develop an intuitive user interface for seamless navigation.
- Implement robust data collection mechanisms for sensor and location data.
- Ensure app reliability and performance optimization.
- Incorporate security measures for data protection.

Ideal Skills and Experience:
- Proficiency in Android development (Java/Kotlin).
- Experience with data collection APIs and sensor integration.
- Strong UI/UX design skills.
- Knowledge of security protocols and data encryption.

Looking for someone with a proven track record in similar projects. Please share your portfolio and relevant experience.