DHL Air Interview is straight forward but depends on the level of the interviewee's experience.
Usuall HR + a F/O who has been doing this job for a couple of years.
Don't discount him as they take his view seriously in the office.
Some experienced Captains have fallen foul of him.
Once the interview is over and all the written tests completed (Physco etc) the next stage is a simulator test lasting about 30 mins. Again the content varies upon the level of experience. You might meet the F/O again at this stage.
Would be able to give better info if I knew the experience level of the applicant.
If 350 hours per year (Max) suits you and you are not trying the commuting to Leipzig route its a good life and reasonably well paid.
T&C's not good but better than some.