I run the art dept at a
sign shop and we have this issue every time we look to hire on new designers. Finding designers with any type of signage experience is hard. Best advice I can give:
For the add itself: Consider looking for candidates is associated trades - our go to is to list in the add a requirement that the candidate has worked at a
sign company (pipe dream) or at a
Print Shop < While not the same, a subpar designer that has worked at a kinkos or staples is going to require less training than someone who has only ever worked on a
computer. + Require a portfolio link. anyone with an adobe account can create and host an online portfolio, there's no reason that someone looking for a graphic design position would not be able to produce one.
When looking through resumes: If
sign & print shop experience are off the table, look for any other examples of physical media - screen-printing, business cards, posters. Watch out for portfolios that only contain college projects - look for real client jobs, beyond just logo design - that doesn't mean don't hire people right out of school, just know what you are in for. IF you are hiring right out of college, ask about vinyl plotting, laser cutting, or 3d printing - many schools have these now for students to work with & it gives you a base to work from.
^ most of these rely on you having a designer in house already who can help train, if you don't then working with someone on a freelance basis might be a better idea to start with. That would let you build up an archive of
signs that are setup the way you want before you try and bring in a designer to do it full time. (using something like Signpack)
At the end of the day, unless you get really lucky, understand that there is going to be a learning curve, especially with the niche stuff like lit
signs (channel letters/monuments) or ADA (tactile/braille)
Follow up tip - when you hire on designers,
make them work in production for at least a week. Gives them a good base relationship with the production team and helps them think design through for physical application "will the vinyl guy hate me for this?" "can this even be printed?" "is this possible to produce?"