I applied for a Full-Stack/Front-End Software Engineer position. Unlike the likes of Google, Salesforce first selects teams that may be interested and has them reach out to you and interview you on-site. After a HackerRank screen, two teams were interested in talking to me on-site so I had a double day booked in a day (7 hours or so), with interviews alternatively with one team and the other.
The questions were relatively straightforward. One team was more focused on practical questions using JS, finding bugs, knowing about peculiarities, etc. The second was a bit more abstract, with questions about what design decision I'd make to build an instrumentation system as well as a graph related question. Last but not least, I had a broader discussion with the engineering lead about tradeoffs between different technical decisions to build a particular system.
Overall a great experience. One thing to note is that Salesforce is a heavily remote company so a number of interviews were remote, which wasn't an issue at all.