Hello! I am a web developer with 2 years of experience in PHP,mysql and more in HTML,CSS,JavaScript. I have worked a lot on WordPress and woocommerce. I must admit I am not a pro in openkart I have just started for a month. But it is the same technology after all. If you let me know what exact changes you need I shall make them happen. I have experience of working with Facebook api, Google APIs too.
Let me know about your requirements please!