Integrate etistalat payment gateway to our php based project

Dear Sir. I have read your description. I can build your site. I am a web developer who is specialized in Web Design ,P H P,MEAN,React and so on.I’m applying for your project spec offer for remote working Web Developer to design and develop a real Estate website.I have 6 years of experience in Word Press and MEAN, working as an developer in our town company where I am responsible for managing and upgrading company's web site. I have designed and developed a lot of websites and online games for different industries and clients. Based on the provided project details, I estimate to complete your project within 4 days after clarifying all requirements, project details and mile stones. I would appreciate working with you. I am looking forward to your reply.