Started with a telephone interview, followed by a virtual interview with a senior partner. After this I had an in person interview where you had to run a “demo” workshop, and then an interview

It was straight-forward. Rigorous yet clear. Polished yet human. First round was an informal conversation with HR. That's where I found out the job was not remote but more traditional-in person consulting around the US. Second round was slightly longer conversation with an existing consultant (or previous onto higher management now). Standard behavioral interview questions where you can respond in STAR format, but turned into an informal conversation as well. Third round was broken into 2.5 parts. A mock intro call with a potential new client, a presentation to senior executives, and a follow up proposal to draft in response to the mock intro call. The intro call is led by you so come prepared with questions you'd ask. They prepare you with a lot of information beforehand but want to see how you would lead this kind of conversation on your own. There's ample space to make inferences. The presentation portion is related to your prior background. Most consultants on the team were industry experts in their various fields before joining TGP and this section is designed to see what unique perspectives you'd bring to the table. The proposal is written after round 3 is complete (you have 2 days to finish it) and they help prepare you with a useful template.