The Bible just states that Noah is to build an Ark of "Some material", he could have had 20,000+ workers for all we know.
We only remember and write about the leaders of people who did great things. Like the Pyramids of Giza, we pretty much know for whom they were built and in some cases who was the architect. It's not like we would remember the worker pushing that last block up onto the top of the pyramid, or even how many workers there were.
So, it's very likely that Noah had many workers.
Did a person name Noah build an Ark. I am sure that it happened. Was it to the scale written in the bible, probably not. Its the telephone game right. As the story get passed along things get added on. The underlying premise of a flood is true. That is from many civilization stories in that area. The concept of the ark is probably true. Now the stuff that makes it LEGENDARY!!, that is debatable.