Pros
I've worked for Tanium over 5 years and have seen a lot of change. The pace is fast and the teams are small so if you want autonomy and ownership this is a great place to work.
Kontras
They're constantly reorging, it would be nice if the exec team could make up their mind on how they want the org structured and stick to it. They tend to do whatever other "hot" companies at the time are doing. The founder still plays a massive role and the c-suite just seem like his puppets. No one wants to be in office and ppl constantly complain but no one in leadership listens. It used to feel like they cared about what the employees say, but now everyone seems beaten down and just does the work so they're not laid off. Pay is also low compared to competitors. You have a decent annual salary but no bonus and no IPO in sight. You'll get RSUs but the price keeps going down with a promise to go back up. I've only seen it go down in my experience so just be mindful that whatever your base salary is (unless you're in sales) is going to be your total earnings.