Mobile App-Controlled Smart Lock Design

I'm looking for a professional who can help me design a smart lock system that is controlled via a mobile app.

Key Requirements:
- Design a smart lock system with mobile app control capability.
- Create a mobile app compatible with both iOS and Android platforms.

Essential Features of the Mobile App:
- Allow for remote locking/unlocking of the smart lock.
- Maintain activity logs for tracking usage and events.
- Facilitate user management for controlling access.

Ideal Skills:
- Expertise in smart lock system design.
- Proficient in both iOS and Android app development.
- Experience in implementing security systems.