Developing (Thingy:91) Nordic NRF9160 firmware for GPS tracking

I am looking for a skilled firmware developer to assist in developing the Nordic NRF9160 firmware for our GPS tracking device, (Thingy:91). The ideal candidate will have experience with Nordic NRF9160 and GPS tracking devices.

Functionality:
- The main functionality required for the GPS tracking device is real-time tracking.
- Additionally, the device should have the capability for geo-fencing and alerts.
- Data logging and analytics features are also desired.

Battery Life:
- The GPS tracking device should have a battery life of more than 48 hours.

Communication Protocols:
- The device should support LTE-M/NB-IoT communication protocols.

Skills and Experience:
- Previous experience with Nordic NRF9160 firmware development.
- Strong understanding of GPS tracking devices and their functionality.
- Proficiency in LTE-M/NB-IoT communication protocols.
- Knowledge of geo-fencing, alerts, and data logging.
- Ability to optimize battery life for extended periods.

If you have the necessary skills and experience, please submit your proposal.