In a nice article about Lost, they also wrote about what the cast members are up now. This is the part about Liz:
Elizabeth Mitchell (Juliet Burke)
Just after Lost ended, Elizabeth nabbed the lead role on V. Up next, you can catch her on The Expanse on Syfy.
The list of her projects is so long that they could only write the first thing she did after Lost and her latest project. What a beautiful career she has! She’s so talented! <3