Dear sir
Thanks for your check my message.
I’m Android Senior Expert.
I am Android talent developer that have a lot of experience in app developing.
I think your app need Admin panel(Front-end) and back-end webservice.
Admin panel and back-end webservice can develop using PHP & MySQL and Ajax.
Also Admin panel manage all data.
And then back-end webservice is for sync communicate data between Admin panel and app.
I can do it perfectly and I think this job is suitable to me perfectly.
Your satisfaction will be my primary concern and will provide you quality and consistent results.
I am 100% sure that my services for you will become part of my portfolio and your feedback will support me in future job applications.
If selected for the project, I would like to start immediately and devote my creative suggestions to your project in order to serve you better.
If you are really doubt on how fast I can complete, just give me a chance, I shall do my best.
I'm fully dedicated onto your project, can devote my full time to complete the job on time.
I can deliver high-quality result to you, fast turnaround time.
I would be happy to provide further information at interview.
I hope I have demonstrated to you my interest and motivation to get involved in your project.
Looking forward to your good reply.
Thank you for the opportunity to submit my proposal for your project.
Best regards.