Hi,
I am pleasure with your job for payment gateway integration.
Thank you for the job posting. It's a pleasure to meet you.
I'd really like to work with you on this one if possible! I do have a couple of questions, but first i'd like to make you an offer and some background so you can check my work out. I have been developing kind of project within 10+ years so I'm fluent experience to handle project. You'll get all the expected stuff like a great professional service and a fast turnaround, at a bit less, and I get a bit more exposure.
If the above offer sounds like something you would be interested in, i'd love to hear from you.
Best regards