I applied online. The process took 4 weeks.
Do not bother applying to their European office if you are non-European. You will not be treated well or at par. One of the worst experiences interviewing anywhere. I withdrew after a few rounds.
The following metrics were computed from 2 interview experiences for the Datadog Engineer role.
Datadog's interview process for their Engineer roles is extremely selective, failing the vast majority of engineers.
Candidates reported having mixed feelings for Datadog's Engineer interview process.