Firmware development for app to display using BLE(Only US residents)

We are striving to have an app where when the user selects a image in the app, 1080 x 2160(vertical) and 2160 x 1080(horizontal). That selected image goes through a bluetooth connection into pcb which then it displays that image on the display. Currently we are stm32, also RGB interface programming will have to be used to enter into our interface converter that converts from RGB interface to mipi dsi 4 lane interface. We have most of the hardware completed minus the necessary parts needed to be discussed by you(firmware developer) and the hardware developer. We are looking to do the process in that both developers have a meeting as soon as the job is set up then we will keep you posted until the hardware developer has adjusted to meet your requirements and has tested out the hardware side through dev kits and other methods. Then upon that point you would be required to program the code and either request dev kits be sent you(which wouldn't take long since developer lives in Orlando, FL) or you could send it to him and he tests it.

Milestones:
- Complete rough draft of firmware
- Review and revise firmware dependent on testing of firmware
- Review and revise firmware for final product(if necessary)


Required:
- RGB interface knowledge
- BLE experience
- STM 32 familiarity
- Flexible in other requirements