Design my dad's invention

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Job Description

I need an engineer to design an invention that my dad has thought of. He is a very handy guy that does a lot of projects around the house. Recently, he has jerry-rigged a system that helps him enormously when he uses a ladder. Without giving too much of the idea away, he has a vision for a product that will be very useful with a ladder while at the same time be compact and easy to carry and store.

The few people that we have told about this idea think it could be a successful consumer product for home handy projects and for professionals.

What we need is an engineer that can draw up the technical plans according to my dad's vision, go through changes and alterations, and eventually produce a set of plans that can be patented and produced.