Who built the ark in the 2014 film Noah?

In the 2014 film Noah, the character Noah builds the ark.

Directed by Darren Aronofsky, Noah is a 2014 epic biblical-inspired film starring Russell Crowe in the title role. The story draws on the Genesis Flood narrative but expands it with fictionalized characters, conflicts, and visual interpretations that are not presented in the biblical text.

In the film, Noah receives a warning of the coming catastrophe and undertakes the construction of the enormous vessel. The production presents the building project as a major part of the plot and uses elaborate sets and effects to depict the Ark and the Flood.

This answer concerns the film, not a claim about historical archaeology. No archaeological discovery has been scientifically authenticated as Noah's Ark, and the movie is a dramatic adaptation rather than a documentary. The title character's name is therefore the single canonical answer to the film question.