First interview was meeting with the recruiter- straight forward, laid back, more of a rundown of the company and answering any questions that I may have, inviting me back to meet with a senior partner. Second interview was with a partner- still relatively simple, didn't ask any technical questions, gave his rundown on the company, asked me a few questions, answered any questions I had. Third interview was fully a rundown of the company, presentations on pay structure, benefits, etc. more of them selling the company to you. Fourth and final interview was back again with the partner to finalize the entire process and to assure the two of you would work well together.