You will spend that 25 years bored at how slow they work. Kelloggs kids itself that its small enough to stay dynamic, this isn't true. Its a huge lumbering behemoth and all change is glacial with all decisions being made by the senior leadership and all work being done by junior staff. Levels and levels of middle management then sit in between with the sole intent of slowing everything down.
Career progression will be slow and be prepared to toe the happy clappy “We love Kelloggs” company line. Kelloggs preaches that it wants to lead on diversity, and they do, however they lack diversity of though and want everyone to think the same way, is obviously results in a lot of self-congratulation and a ‘yes men’ culture. If you oppose a way of thinking or suggest alternative ideas to the business norm you will be considered a “negative thinker”.
A lot of the business is about being seen to be contributing rather than actually doing anything.