One interview (technical) and within 2 -3 weeks you get an offer letter by email witch you should print and sign and then resend it if you are on board. the technical interview was kind of medium he asked some advanced questions may be some of them will be out of your experience level but don't worry they are not to judge you it's for excellence. This company in particular the owner is the one who choose the cvs so try to be very honest about your resume and then if he choose your resume for an interview you are 75% hired