Unnecessarily long. One phone screen, another semi-technical screen (write a bunch of classes and interfaces), a technical problem (45 mins - game of life - python), interview with a PM and then a half day of technicals. However, found out today that they did layoffs this week, despite telling me they had "3 years of funding." And 'there is job security for the next couple of years." Their excuse for the layoffs was "we overestimated sales." The final interview was more of an interrogation than an interview. Beware! This company sounds like a mess! Took 5 hours out of my work week to interview for a position they knew wasn't going to be filled.