I applied online. The process took two weeks.
There are about five rounds of interviews that they make you go through and do stuff like take-home assignments that even if you go above and beyond to the point that you take a day off from your current already underpaying job, they find unrelated reasons to reject you that are not even stated in the ambiguous assignment requirements. I am not sure how anyone can predict what they are looking for when there are millions of ways to optimize the code. Not to mention the interview is stressful, knowing how tough the competition is and that the company is making the candidates do a ridiculous amount of work when they already have someone in mind. If you are attending the interview, don't have much hope unless you are referred by someone in a higher authority.
Take-home assignments: don't bother doing everything they ask, because they won't hire you.
The following metrics were computed from 2 interview experiences for the Grafana Labs Front End Developer role.
Grafana Labs's interview process for their Front End Developer roles is extremely selective, failing the vast majority of engineers.
Candidates reported having very negative feelings for Grafana Labs's Front End Developer interview process.