What do mean by a challenging job?

This job interview question is trying to determine two things - what your definition of a challenging activity is and how you approach challenges and problems. Think of specific problems or challenges that tested your skills and abilities and had positive outcomes. Emphasize how you analyzed the situation, the skills you used to professionally deal with it and what your particular contribution to resolving it was. Always try to end on a positive note. Examples of difficult challenges include having difficult goals and deadlines, unreasonable customers and clients and adapting to changes.