Dear sir
In reviewing your project description, I’m submitting my proposal.
I’m Android Senior Expert.
I am Android app honest developer that have a lot of experience in app developing.
Then, if you want back-end webservice, I’ll develop Restful JSON, XML and SOAP based Web Service using PHP, MySQL and Ajax.
I can do it perfectly and I think this job is suitable to me.
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.