Dear Hiring Manager,
In response to your job details, I beg to offer myself as a contractor for the post mentioned. I have available time to do this work. So I consider that my experience and interests match with your requirement and want to apply for the same position.
I, therefore, fervently pray and hope that your honors would be so kind as to appoint me for this job. I shall spare no pains to satisfy you by the sincere discharge of my duties. Please feel free to contact me directly to discuss this position further. Thank you for considering my application and I hope to talk to you soon.
sincerely yours,
Julfecur Mahbub Khan.