Hello,
I read your project description so i can do this work "Paytm payment gateway" So can we discuss about your project.
I am an experienced Core PHP, Laravel Expert, Website Developer having more than 5 years of working experience in PHP, HTML, MySQL and Laravel.
Please get in touch to let me the requirements in more detail so that I can assist you in a better way and make your project run successfully.
Thank you
Balkanwar