Pros
Full time employment and not contracted, which is rare for many who wish to leave academia. Other editors are friendly and it's nice to work in an international team. If you like to travel, there are plenty of opportunities for that.
Cons
High workload and little reprieve due to high editorial staff turnover. Salaries may be just average for publishing but below average for skills required for the job (a PhD). Your experience and wellbeing is entirely dependent on your relationship to your line manager, who may not always have your best professional interests at heart. Little to no room for growth after senior editor promotion. Company is very opaque on salaries with major discrepancies between offices and editors, and no room for negotiation. Difficult to work for some of the purely open access journals for moral reasons.