We are running on Magento ver. 22.214.171.124 with some odd bits missing (!) like part of the admin panel grid is missing...Need an upgrade to the latest version with great care taken to make sure everything works 100% including our many costly extensions etc. We need a real expert who specialises in this work so that there will be no downtime and none of those horrible errors that we only find creeping in a week or two after the project is finished.
We propose to hold 25% of the bid back for 14 days after work is finished in case of any remedial actions being required that are not immediately noticed.