The interview process was pretty quick. I found the position posted on CraigsList and responded. HR from Linden Lab quickly contacted me and did a brief phone interview. Then a Linden Lab engineer followed up with another phone screen. Then one final phone interview before they decided to bring me in for an in-site interview. During the on-site interview I meet one on one with five engineers from different levels. Finally I got to chat with the CEO for 15 minutes which was not previously planned. The interview seems to concentrate testing a person's general grasp of math and computer science, and general intelligence level, rather than testing memory of specific programming language features. At the conclusion of the interview it seems pretty much they decided they like me a lot. The HR promised to come back to me the next day, which they did. The entire job application process was quick and took less than three weeks from begin to finish.