Need an electronic engineer to design an iPhone Lightning type cable

Hello, I am looking for an electronic engineer to work with on designing a new Apple Lightning based cable. I need an engineer to make a "Jumper" cable to take the accessory power from one iPhone and use it to charge another lightning based device. Ive attached a basic photo to help you better understand what I am looking for. I will need design files to send to manufacturers (Detail drawings) Thank you and I look forward to working with you.