Nano Drone Flight Controller Design

I'm seeking a skilled engineer to design a flight controller for a nano drone primarily used for photography. The drone should feature:
- One key takeoff and landing
- Auto return
- HD camera
- Altitude hold
- Stability

In addition to the design, the freelancer will also need to develop the firmware, code, and a mobile application for controlling the drone.

Ideal Skills:
- Experience in drone technology
- Proficiency in firmware and code development
- Mobile app development experience
- Knowledge in designing flight controllers
And remote control

Please include examples of similar projects you have completed in your proposal.