Comment by crote

What kind of introspection did you do on the root cause of those issues? "Data from deleted table reappears in new vaguely-similarly-shaped table" or "simple row write just doesn't happen" are bugs that are quite impressive to accidentally happen!

How did your design process resuls in an architecture which even allows for this kind of failure? How did your review process allow for code to be released which is seemingly completely unread and untested?

"We added some unit tests" is is an extremely damning answer - the lack of tests is a symptom, not the cause. If you ever want to be taken seriously again, you'll have to completely rethink your development process first, and do so publicly.