Pros
A leader in the prop trading / market making industry with global reach, brand, and opportunity. Strong financial track record with profit share based reward structure can lead to significant financial reward. Focus on a culture of collaboration and teamwork, not secretive like others in the industry. High expectations for intelligence and ability for all employees so you are always working with the best. Relatively low level of office politics. Still plenty of room for expansion in the markets for Optiver.
Cons
Requires a high level of commitment, drive, and intelligence. If you are not ready / no longer willing to commit at that level you will need to part ways. Business priorities can shift quickly with relatively little regard to the effects this has personally for employees. Demanding job that is tiring, not necessarily doable for the long term.