I applied through an employee referral. The process took three weeks.
Normally I don't post here, but since this process was similar to others that have posted here, I wanted to confirm. I was referred by my friend within the company, so I had a good starting point. The first technical interview required a simple implementation of a spreadsheet. I was able to solve it and the follow-up question. Like others have mentioned here, the only positive thing the interviewer could say about the culture was how smart everybody was. I ended up not receiving another interview without any explanation; they very much are looking for their own implementation. Avoid.
Basically, you have to implement the functionality of a fairly common office technology.
The following metrics were computed from 15 interview experiences for the Sigma Computing Senior Software Engineer role.
Sigma Computing's interview process for their Senior Software Engineer roles is extremely selective, failing the vast majority of engineers.
Candidates reported having very negative feelings for Sigma Computing's Senior Software Engineer interview process.