Panel interview, total of 7. Started with two phone screens before that. Additionally, there was a writing test (given the skills needed for the role), which was very daunting / demanding. Overall a grueling process, but felt supported and energized throughout. Riot's interview process is known for being intense, and the selection/vetting of candidates itself is highly selective. Ultimately, I feel it's justified, and having now been on the inside, can confirm its value to ensuring company culture lives on.