I am planning to build a site with help of some developer. However, my biggest huddle is product variation. I want to build an auto part store and it has lots of vehicle fitment, like a year, make, model, submodel, engine size, number of doors, etc. There are about 38 Fix rows with all kinds of different variations. Each category has a unique variation. I want to build a master product and a child product. I want users to be able to filter from the sidebar such as color, engine, etc. Is there any developer or company who can build me a custom solution?