Home assignment (hard LeetCode), then on-site interview. The on-site included a 1.5-hour technical interview, with a question about optimizing an NP-hard problem by reducing the input size, followed by a 30-minute HR interview. The overall process was well-organized and the interviewers were kind and professional. The interview went well and I received an offer, but about a month later they canceled the internship program, which was very disappointing.