Anonymous Phone Locator Webapp

I'm looking for a skilled developer to create a responsive contact tracking web application that can localize a phone number anonymously. The app needs to be compatible with both desktop and mobile platforms and should integrate with local SMS gateways for sending notifications.

Key Features:
- User Account Creation: Users should be able to create an account and input the number they wish to locate.
- Location Request: The app sends a location request via a hidden text message, without the target knowing.
- Location Delivery: Users receive the exact location via email/SMS and can view it on a dashboard map.
- Reverse Phone Lookup: Reveal identities behind unknown numbers.
- Lost Phone Finder: Send a message to a lost phone for return prompts.
- Phone Number Insights: Detailed information on any number, including registered name, model, and brand.
- IMEI Tracking: Get location and details through an IMEI number.
- Database: Store all tracked numbers securely.
- Accuracy: Maximum location accuracy of 15 meters.

Ideal Skills & Experience:
- Web app development
- Experience with SMS integration
- Database management
- Strong understanding of location tracking technology
- Frontend and backend development skills

Please provide examples of similar work done and your approach to ensuring user privacy and data security.