She may still be a member of Team Flash, but it doesn’t look like she’s going to hang around the lab quite as much as she used to, at least in the early days of Season 4.
When we last saw Caitlin Snow, she opted to go full Killer Frost — leaving Team Flash in a quest to find herself.
Honestly, since we still don’t quite know how S.T.A.R. Labs gets its unending funded, bartending might simply be a more lucrative profession.
Now, in Season 4, it looks like her “found” self involves serving drinks at a dive bar while trying to keep the redheaded and frosty side of her personality in control.