Pros
Tanium is a serious engineering organization with truly innovative technology built by the kindest, most upstanding engineers I've ever worked with. Tanium prides itself on Doing the Right Thing and Winning as a Team, and it shows in the helpful, kind way everyone at the company behaves. It's been so refreshing to be able to trust that my work will be appreciated and that I can ask for help without looking stupid. Tanium has a very flat org structure (all engineers, except for interns, start as Senior Software Engineers and there is no title promotion), which helps the best ideas win, instead of the ideas coming from the most senior title.
Kontras
Tanium is a well-kept secret outside of the Enterprise IT community, so you'll be explaining what you do to a lot of your friends and family. They do an excellent job of training new employees though, so it won't be hard! Also, due to the excellent internal strategy of not using title changes for promotions, it's a little bit of an adjustment to learn how career growth works here.