Pros
IFF's greatest asset is that it is full of super talented, hard-working people who are eager to do great work in support of the organization's mission.
Cons
I would not recommend IFF as an employer. I witnessed and experienced a couple of members of senior leadership doing great harm to individuals and getting in the way of good work being done. Sadly, in a culture that explicitly values psychological safety and candor, I saw many of the concerns raised to leaders and HR met with gaslighting -- denying problems and/or blaming those experiencing toxic dynamics, sometimes labeling these as "personnel issues." The results for individuals ranges from frustration to mental health impacts, and the results for the organization and the communities it serves are less good work getting done and missed opportunities for impact.