Interesting question with large range of BQ, needs deep understanding of problem solving and technology. Including basic principles but more about interviewee themselves. Be prepared and be relaxed. Good Luck.

I applied on their website and was contacted by their recruiter within a few days. I had a short phone interview with the recruiter. He asked why I was looking for a new job, and asked a question about my resume. Then he gave a brief overview of the company/products. After this, he emailed me links to three online tests: Personality, Cognitive Skills, and Programming. The programming test presented a made-up language very similar to Meditech Magic or MUMPS. Do the questions in order, since each builds on the previous questions. After passing the tests I had one interview on-site, then I was asked back for a block of 4 1-hour interviews with different people. The interviewers were all very nice, and for the most part it just felt like casual conversations where I explained what I was looking for, and learned about the position. Only one interviewer really put me on the spot with tough questions. Nobody mentioned the personality test. I got the impression that they were looking for 1) technical/problem solving ability 2) good communication skills. Up to this point the process was moving quickly; now it slowed down. I was asked for references, then I heard that they wanted to make an offer but had to get approvals. This took a few weeks.