Two rounds: DSA, System Design.
Both questions can be found on the internet or Glassdoor.
Overall, a good experience with HR. Would like to interview with them again, just because the experience was good.
A Variation of the celebrity problem / Design Netflix
The following metrics were computed from 9 interview experiences for the HubSpot Software Developer role.
HubSpot's interview process for their Software Developer roles is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for HubSpot's Software Developer interview process.