I applied through university. The process took 4 weeks. I interviewed at Fourth Dimension Engineering (Columbia, MD) in Mar 2018
Interview
Short phone interview with mostly behavioral and short resume questions, followed several weeks later by an in-person interview with a short written test (which you discuss with them) and a more in-depth dive into your resume. Most questions on the test could be approached from a basic knowledge of fundamental mechE concepts.
Interview questions [1]
Question 1
Same sort of stuff you would see on a regular exam for school.