Pros
Allstate is a huge company with a ton of opportunity. There are so many different parts of their business that you can find a position doing pretty much anything you could imagine. From technology to finance to investments to insurance sales, Allstate has it all. There is also a lot of flexibility to move around within the company. Many employees have been with the company for 15+ years because of this. Lastly, senior management are extremely accessible. Allstate really promotes an environment of inclusion and values its employees.
Cons
Because of the size of Allstate, there can be some issues with how quickly it moves in terms of technology. Legacy systems are common because of the size, complexity and regulations of the company. This is somewhat compounded by employees being able to get comfortable in a position and then becoming static. While very open to new ideas and suggestions, there is a lot of organizational inertia that can keep these advancement from becoming a reality.