Need A Person Who Can Develop Mobile app For Electronic Display Celibrated

We are basically Electronic Device Manufacturer , We do Electronic Digital Signage's , We want our own Control Card PCB Design along with Programming to make any changes later into it . We need an electronics team who can design our controller cards for led displays and guide us further with mobile app data update into the display systems for reference see once video : https://www.youtube.com/watch?v=7gwFwdYq98Q