Be prepared to follow up for each round. I followed up to push the process for every round, and for the final round, I did it twice. But the recruiter ghosted. I think it's very disrespectful, especially if the candidate made it to the final round. It takes very little effort to send a result.
The following metrics were computed from 2 interview experiences for the Lightmatter Engineer role.
Lightmatter's interview process for their Engineer roles is extremely selective, failing the vast majority of engineers.
Candidates reported having mixed feelings for Lightmatter's Engineer interview process.