Need an expert in Opencart

The main tasks for the site https://su-venir.com.ua/:
Copy the code of the account transaction from the page success on the product page and a category that worked in a fast order
To finalize multisec (Rus, Ukr, eng)
Download via import file option, the availability/timing of manufacture and delivery output to the item card
detail (elaborate on in the course).

Look forward to long term cooperation with experienced and decent man from Ukraine.
Important:
not to break what is
to discuss details on the phone
to perform the work in adequate time.
Will consider offers for those who are able to work for the result.