A week after the online application, I was contacted via email to schedule a 45 minute, over the phone interview with an existing solutions architect. The interview was pretty general: discussing previous work/school experience, some basic technical stuff and about 15 minutes of behavioral questioning. Within 2 business days, I received another email telling me that I passed the phone interview. The recruitment coördinator asked me to provide him with some dates for the onsite and later that day, I got confirmation and was send an email with the specifics. The onsite consisted of four 45 minute interviews and a presentation about "something I created". What I would recommend is to refresh basic technical knowledge and also try to UNDERSTAND the leadership principles. You don't have to memorise them but for each leadership principle, think of 1 or 2 situations that you experienced before that you can link to that principle. After the onsite, I was extended an offer within a couple of business days.