M.W.
T. and others!
I am in a group called Mothers & More. We have several Full-Time working moms in our group. We are not a FT working mom's ONLY group, but we have several that work full-time, part-time, volunteers, SAHM, etc. Most of our events are evening events that start around 7:30pm (you could show up later if you want). Check out our website, and see what we have going on. You can always come, check it out, and see what you think. There is no obligation to join if you don't want to, but it was a life savor for me, and I know many others.
http://www.jocomothersandmore.org/
I hope this helps! M.