Think twice before joining.
Charisma and nepotism are often valued more than competence during the hiring process. During my time, this led to more than one colleague being quietly made redundant (or fired, I was never quite sure), whilst others struggled with their role so much they constantly had to reach out for help to complete basic tasks in their main job.
There are also sadly a few pockets of toxic culture, depending on your department/team. This is the only company I have worked at where I ever felt singled out and bullied by a senior manager. When a project goes badly, I saw a lot of "blame game", and not a lot of root cause analysis.