⟩ Please explain what challenges are you looking for in this production job as Filling Machine Operator?
A typical interview question to determine what you are looking for in your next job, would be to ask what challenges you are looking for.
The best way to answer questions about the challenges you are seeking is to discuss how you would like to effectively utilise your skills and experience if you were hired for the position. You can also mention that you are motivated by challenges and have the ability to effectively meet deadlines to handle a challenging job.