Hello,
I see your post seeking a developer to help you upgrade the site and I would like to apply for this job.
I'm a senior Magento developer with 8 years of experience, I have completed various types of tasks during my working career, especially those related to upgrading.
You can see what my previous clients said about my job quality by viewing this reviews page: https://www.freelancer.com/u/vniteam?w=f
Feel free to contact me anytime, I'd love to hear back from you.
Cheers,
Doanh Pham