Got a call from HR initially and had about 1 hour interview. She asked about my background and why I chose illumina. She was super friendly and the interview in fact turned to a friendly chat about me and partially her. Got three more calls from HR manager and the sales manager each took between 45-1 hr. In the last one I've been asked about my broader vision for illumina and/or what is my approach dealing with a customer what are my sales techniques and style etc. I would have got thr offer but due some issues (living in Canada) did not get the offer. The HR and sales manager though contacted me and explained the situation, very professional and friendly. It was one of my best interview experiences.

Very technical interview and they expect you to know their technology inside and out. Tech specs on various kits, devices, and data output. Got to meet with basically the entire inside team which took several hours but felt like a thorough picture of all the personalities involved.