First of all, the workload is excessive. Expect to work 10-14 hour work days without any appreciation or compensation. The amount of paperwork and administrative nonsense in every program will consume most of the day. Secondly, it is laughable that the mission of this place is that they "focus on people", the only people they focus on are the funders. They apply for almost every grant and write unrealistic proposals. When they are funded, they do not do what is best for the population they are trying to serve but rather whatever the funders demand even if programmatically, it is unfeasible and unhelpful.
Your experience at this company will 100% be impacted by your supervisor. As an external candidate, there is an acute learning curve with tons of different programs that they use and with trying to learn your own job. In the Leadership practice, Managers at Director & Senior Technical Adviser levels are mostly abusive. They consistently use manipulative and coercive ways to control their staff. You will undoubtedly be micromanaged, overworked, unappreciated, lied to, scared to lose your job, and demeaned almost on a daily basis. In addition to employee abuse, some of these "managers" are constantly angry, they curse out funders in front of their staff, and they criticize their colleagues.
Frankly, I wish I had never taken this job in the first place because I continue to suffer from the psychological trauma inflicted by this supervisor months later.