I learned of this opportunity through a previous co-worker and current Salesforce employee.

I had several meetups with various levels of management prior to a position opening up. Once the position was available, I completed the 2-hour at-home programming exercise. Following that, I went on-site for a 5-hour interview, which consisted of five 1-hour sessions with Senior and Lead Software Engineers, the Hiring Manager, and the product manager on the team.

I was asked to come up with a technical strategy for allocating resources to jobs requiring various amounts of memory and processor capacity.