I was contacted by a recruiter for a phone screen 2 months after I applied online. This was followed by an in person interview with the hiring manager and another technical manager from a different location, who called in to the meeting. The two interviewers alternated asking a series of questions (I believe around 20 questions total). Most questions focused on technical aspects of the job and problem solving skills. This was followed by a lab tour where I was able to meet other members of the team and ask questions without the hiring manager present. Throughout the process everyone was incredibly approachable and friendly. Personally, I found it to be an ideal interview experience, where both sides were genuinely concerned about making sure the position was a good fit. The whole process from the application to the start date took just under 4 months.