Dear sir,
I read your project description.I will be more than glad to do this project for you.
I have been in this industry for 4 years and such jobs are my daily practice.I am software engineer.
I can assure you that if you work with me once, you will always work with me for these kind of projects.
I am very eager to have a conversation with you about this project,
so I would appreciate you contacting me for a short discussion about this job.
Looking forward to hearing back from you and working with you on this project.
and thank you for studying my proposal.