Very long, 7 rounds, they asked me to take a BA certification on the fly within a day. It was a critical role and the project was on fire. The interview process made me feel not to join the company. It's rather callus but I am glad I did join the company. It's worth it. The interview made me suffer as they want to make sure that I am the right guy. It was justified. But still seemed long, unplanned and odd.