Pros
Jampp is a relevant player in a highly dynamic and competitive industry (mobile app advertising). It has global outreach, ambitious growth goals and focus on tech development (tech and product representing about half the employee base). It is a startup in the process of scaling up, so although it keeps a roll-up your sleeves mentality it is also in the process of gaining a more defined organizational structure. Those with a curious mind will find that there is a lot to learn and the people at Jampp are very willing to share their knowledge (about technology, the industry, the business, etc). In that sense, it retains a healthy and collaborative environment. If you find the above enticing, Jampp will be a good place for you.
Cons
As any company growing up, it goes through several re-organizations, sometimes justified and sometimes not so much leaving the impression that we are zig-zagging. There is a lack of a true product vision for the mid and long term that is honest with the real challenges we face and that trickles down convincingly from the hierarchy to the rest of the organization.