After the HR interview, you get a homework. They'll tell you the project will take 3-4 hours, but ain't no way anybody can do it in 10 hours. They expect a flawless production ready project with full unit test and e2e test coverage. The project description says the test coverage (unit and e2e) is optional, don't believe it. If they approve your homework, you'll have 3-4 technical interviews. The process will easily take over a month. Only apply if you have 2-3 free days to work on this project.

After applying I got an email about an interview with the HR person. Upon getting a call from the HR, we started chatting about what HelloFresh is and what they offer for full time employees. HR then asked me regarding my background. It seemed to me that the process was very rushed and that HR did not review my resume/cover letter, as I clearly stated that I won't be graduating until few months later, and won't be available for full-time until then. After I talked about my education background, HR then realized I am not available for working right away, and quickly hung up. I wasted 20 mins chatting with HR about my background until we realized that HR did not do their only job.