Pros
I have been working as a Data Scientist for over 6 years in Taboola, and am enjoying working there. There's a really nice family vibe, and the challenges are changing all the time, keeping it interesting. As someone in the ML field, it's lots of fun having so much data to play around with.
Cons
Data science in Taboola is end to end with both research and engineering challenges. Some people in the DS field might view that as a con.