Long answers
If someone is slow to answer questions, they don't respect your time and project. A successful industrial designer always keeps in touch, not afraid that you can overload them with work. In addition, such punctuality speaks of work discipline in general.
Complex character
Sometimes you have to work with a specialist continuously for several weeks. It is much easier to find a person who will be tactful, polite and sociable when interacting.
Lots of bad reviews
Reviews often reflect the mint database designer's work. If among many positive messages there are a couple of bad ones, this is not an indicator of failure. We all make mistakes. But if more than half of the negative ratings are negative, then this is a reason to think.
Signs of an unscrupulous industrial designer
No experience in your field
Even if the designer is a good person, responds quickly to messages and has positive reviews, there is one BUT. His portfolio should include examples from the field of mechanical engineering to be a suitable candidate for your vacancy. A specialist in furniture fittings may not be ready to create a technological mechanism.
Once you find the perfect industrial designer, you will reap the benefits of having them in your production process.
Why Industrial Designers Won't Be Replaced by Robots
A neural network can generate a logo and identity, but it cannot come up with a comfortable chair. In industrial design, it is important to have a good understanding of human psychology: to understand people's needs, analyze the market and be aware of the latest trends. Design is associated with meaningful creativity, which a machine is not yet capable of.
Here's a great example of how creative thinking can help solve design problems: In 1937, American supermarket chain owner Sylvan Goldman noticed that grocery baskets were filling up quickly and becoming too heavy. To get people to buy more, he invented a rolling grocery cart. It held more groceries and was easy to roll around the supermarket, allowing shoppers to spend more time in the store. The cart revolutionized the industry, and its design has remained virtually unchanged for 80 years.