Android Client Base Management System Development

I am in need of an experienced Android app developer who can create a comprehensive client base management system. This system will serve to manage my customer relations effectively and track their subscriptions and purchase data. Core functionalities of the system will include: - Contact Management: Keeping track of all customer details and interactions. - Customer Support Tracking: Monitoring customer support interactions and outcomes. - Subscription Management: Keeping tabs on customer subscriptions and their statuses. - Purchase Data: Storing and analyzing customer purchase history. - Notification System: Sending automated notifications to customers regarding subscription renewals, promotions, or support updates. - User Authentication: Implementing secure user authentication methods to ensure customer data is protected. - Data Backup: Regularly backing up customer data to prevent data loss in case of system failures. - Reporting Tools: Providing detailed reporting tools for comprehensive business analytics. Additionally, the system should incorporate: - Subscription Management: Tracking new subscriptions and renewals. - Purchase Data Analysis: Interpreting purchase data to identify trends and inform business decisions. Ideal candidates for this project should have: - Extensive experience in Android app development. - Proficiency in creating client management systems. - Skills in data analysis and subscription tracking systems. - Knowledge of customer support tracking systems. Please provide examples of similar projects you have completed in your bid. The user interface should be simple and clean. The project will use MongoDB as the database technology. The system should include standard reporting templates. The system should integrate with payment gateways to handle transactions seamlessly. The user interface should include basic customization options and adhere to standard UI design principles. The system should also integrate with shop items and delivery. The user interface should have minimal customization options to maintain simplicity. The system should include standard reporting templates such as customer interaction reports. The notification system will support only a single language.