The very essence of companies is progress and success.
A company can only be successful if the management takes progressive steps and calculated risks towards their success.
It goes without saying that such a progressive management requires a progressive workforce, and only people who take challenges would be a good addition for a progressive workforce.
How to Answer
If you are asked what challenges you are looking for in a position, here is a way to answer the question:
“I understand that challenges are part and parcel of the job requirement that I am aiming for. I am actually looking for jobs that would challenge me on a professional basis, so that I can enhance my skills/abilities in order to add more value to the product or service that the company is offering to its clients. “
Learn the Job Description carefully
About Meeting the Challenges
You can also answer the question according to the job description centric challenges, challenges that if you meet, would be considered as achievements in your job profile.
For example, if you are in the writing profession, you could say that you consider writing fiction a challenge, or writing non fiction a challenge, as the case may be.
Also, if you are into the computer programming, you will have a lot of options when it comes to challenges, as there are several challenges that are presented to a computer programmer all through their lives – designing new cutting edge product from scratch or learning to program using famous software tool.
Likewise, you can think about the various challenges in a sales job (meeting sales goals/quota) or a managerial position etc.
More info – What motivates you? Define success at work.