I applied through a recruiter. The process took 6 weeks.
The interview process was the next:
System design: design a chat app from a client-side perspective (platform and stack agnostic).
The following metrics were computed from 15 interview experiences for the Grammarly Senior Software Engineer role.
Grammarly's interview process for their Senior Software Engineer roles is very selective, failing most engineers who go through it.
Candidates reported having very good feelings for Grammarly's Senior Software Engineer interview process.