I am Magento developer and I can certainly sense the issues you are having while Magento version upgrade.
Here I would apprise you that I have 7 years of experience in Magento (v1.9 & 2.0), PHP(v5.5 & 5.6), MySQL, HTML/HTML5, CSS/CSS3, Ajax, JQuery, Bootstrap v3, JavaScript etc. Developing Magento theme, Extension and Integration 3rd party APIs are my forte.
I will certainly assist you maintaining your website in future.
Please let me know your existing Magento website link to review what all extensions are functional at the moment. Based on that I will give you estimate for the efforts required.
Looking forward to your response for further discussion.
Regards,
Brijesh P, Magento expert.