Pros
I've been working at Lusha for about 2 years and overall enjoy my time at the company very much. Lusha is not for the faint of heart, but if you have what it takes (willingness to work hard, learn, challenge and be challenged, and adjust to many changes), it has a lot to offer.
The company employs many great people. In my opinion, where the company truly excels is with the people currently in middle management (across the board - R&D, Product, Sales, HR, and Marketing) - I'm continuously impressed by their dedication and domain expertise.
Additionally, I have never encountered a company that promoted so many employees internally (up to VP level, I don't think there has been an internal VP promotion yet).
Cons
Because things are moving very fast here, some decisions seem not well-thought-of. This environment isn't for everyone, and it's important to understand that before applying for or joining Lusha. On the flip side, those who like to work in a hyper-growth startup will flourish.