I applied through an employee referral. The process took 5 weeks. I interviewed at Roblox (San Mateo, CA) in June 2015
Interview
Was referred by a friend. They emailed me, I was on vacation the following week. We followed up via email upon my return. We set up interviews. I met with HR and Finance, I came back for a second interview, as the position evolved during the interview process. Came in for a third interview with the CEO. Was offered a position the following week. HR was awesome about keeping me in the loop about what was happening with the process.