I applied through college or university. The process took 1 day. I interviewed at Solvay (Lubbock, TX) in Mar 2019
Interview
I interviewed at my university on campus. Very professional and courteous interviewers. Almost entirely behavioral questions, but also some about my resume. Some of the questions were quite specific and required pretty detailed answers. They called me a few weeks later and offered the job.
Easy process, got to see the site before starting to get familiar with the process and people. Overall, very nice people and group to learn from. Interview was quick and straight to the point.