Great question, perhaps run through a bit of an exercise? Let them know you have a form in mind you want to build and tell them they can ask you any questions they want on what the end result should be. I would hope the candidate would have some methodology behind their approach. A big part of being a good form builder is being able to extract requirements in order to plan out the workflow and design. This will also provide you with some insight into their communication skills.With this exercise, the candidate does not need to know anything about ProntoForms but everyone knows what a form is so it shouldn't be too foreign a concept.
Another question may be around some of the generic industry terms such as data sources, data destinations and analytics. If they have an understanding of these and ideally some experience in any one of them they can speak to, I would think that would be a good indicator.
Curious to hear what others have to say.
This is amazing Matt and should be able to help so many in the Community who struggle with finding multi-disciplined talent to augment their teams. I really like how your approach touches on several key traits you were looking for in a candidate.
Thank you for pioneering this and taking the time out of your busy day to share your experience.
We will be following up shortly to continue discussions around the case study competition.