I was first contacted through a recruiter who then set me up with a Tesla engineer who would be a potential coworker. Roughly a week later, I had to prepare an online presentation on one of my past projects to a panel. This was followed up by four 30 minute one-on-one interviews. This is the most important part of the entire interview process. In total the presentation and interviews took about 3.5 hours, but it was not too difficult if you are qualified for the position. I was then flown out to the Gigafactory for a relatively short interview. It consisted of a plant tour, one-on-one interview with a manager, a ride in a Model X, and a benefits review. Each section lasted 30 minutes and was with other engineering candidates besides the interview, but I believe we were mostly interviewing for different positions. I was contacted less than a week later saying they cannot offer me a position due to a significant reduction in process engineering openings. This was a day after their most recent earnings report which was not too positive, so I'm assuming this is why many openings were eliminated.