How are you?
Thank you for visiting my proposal.
I've just read your job post carefully and much interested in your task and I am sure I can complete task with high quality in time as you want.
I'm professional developer.
I have developed app for almost all the major industries.
What is important is what I'll work on your time zone for the good communication.
If you offer me, you'll never be disappointed me, and I'll do my best to complete your task.
Let us discuss your requirements together.
This job is an ideal match for my skills and experience.
I can implement your idea in practice.
Thanks.
Best Regards!