Pros
Wizeline functions still very closely like a startup. It can be messy at times, but this is great if you like flexible environments. In my case I've always found support to change things, and I think most people try to honor wizeline values of innovation (trying new things), ownership (you are empowered to change things if you want it) and community. Wizeline has been growing a lot, so there are also a lot of opportunities to advance your career. In my experience getting a promotion is achievable at Wizeline, and in my 4 years here I've had 2 promotions and 1 lateral change.
Cons
Your experience at Wizeline will largely depend on the account and team you are placed on. Some accounts are more demanding than others, and not all managers follow Wizeline values, since the company has been growing a lot. You can find allies outside your team, but for new hires, I can understand this option may not be apparent or easy to find.