Hi there. I can accomplish all the tasks as per your needs.
1. I will add payment system to your website
2. I will add social media and email accounts links
3. I will add Multilanguage plugin to your website
4.I will Create a link with an existing online website
I am experienced Web developer.I am expert in WordPress, Woocommerce, Payment gateway integration, plugin integration, plugin customization etc I Going by your requirements, I can say with full confidence that I can fulfill them very efficiently.
what makes me stronger candidate over the other people is, my commitment of 100% money back policy on non completed job.
I look forward to speaking with you soon in order to discuss your project :)
Thanks