That said, I would love to join such an organization. Any suggestions on where to find data driven jobs?
My experiences suggest a large measure of caution. Many organizations describe themselves as data-driven and many actually do try. However humans are humans and many will be “data driven” when it aligns with what they want to do, otherwise it’s off for “more data” or a “new perspective”. In other words sometimes data driven means use data when it supports my already staked out position. I hate to be so cynical but I can’t help it.
A/B testing is often conducted unscientifically or with insufficient sample size and timeframe.
Sometimes the cards fall where they fall, and your small UX tweak wasn't involved. It's tempting to conclude A/B testing delivered a valid result. As an experiment, if you deliberately made A and B identical, then A/B test as normal, you will still get a winner. They won't be equal.