Senior Mobile App Development expert

Thanks for your visiting my profile. I've developed more than 30 iOS apps and 20 Android apps so far. Some of them were maintenance of existing app but most of them were developed from scratch to finish. I have a good graphic designer and I've used to work with my designer for my past clients. And I have restful backend api development skills using php and so I don't have any trouble to develop mobile apps by my own. I have developed social dating apps, real estate apps, event apps, photo & video apps, location based demand service apps, Hotel, Restaurant booking apps, Health and Fitness apps, Taxi booking apps and Education apps. My Personal Traits are : I can work over 50 hours per week. I'm working until midnight, seven days a week. I have fairly fluent English and I can read and write, listen and speak in English. My working time is flexible. I can work in American time zone, European time zone, Australian and Singapore time zone. I can work in part time and full time job and prefer ongoing jobs and long relationship based on trust and honest. Hope to have a good relationship here with someone needs a excellent developer. :) Thank you.