Upgrade my Magento CE store to 2.2.2 version from 2.1. (test site is already on 2.2.2)

I'm looking for Magento developer who will complete my CE Magento Store upgrade to 2.2.2 version from 2.1.7 (it was started by another developer and is done on test version already, needs some tuning though). Past experience with other Magento CE 2.2. projects will be very helpful. I'm the owner of a small family owned online store with seasonal products which is starting to grow (it's our 2nd year of operations). I also work full time in IT Shared Services dept. of a big company. Details: I have a test Magento installation already upgraded to 2.2.2 version with extension dependencies updated as well while my production system is on 2.1.7. Work to be done: - setup cron job on test system - install SSL on test system - fix any upgrade related issues found during testing of 2.2.2 - I am doing the tests myself but they can't be completed without support and fixing the above 2 gaps (so far 1 minor issue was found with customer login on front-end) - solve problem with 2 corrupted tables on production system (known issue raised by another developer) - upgrade production system to 2.2.2 (incl. update of the extension Dialcom/Przelewy24 to latest version as on test system) - help with fixing any issues on production system after the upgrade if needed Long term I am also looking for help with some functional enhancements as well but first priority for me is to complete the system upgrade to 2.2. and fix existing issues. Current production Store doesn't support coupon codes which are very critical for promotions and they work fine on 2.2.2 in test.