Hello, I'm interested in developing your map. I have some level design experience from several game jams, mostly puzzlers, I also work on a startup, where one of my main tasks is level design, currently on adventure and puzzle games. I can provide samples of some mockups in the game jams I've worked on.
I present this bid as a 2-part milestone bid. I'll develop a mockup on Tiled, which would show the level from a top-down view, where I can describe each section separately. Then, I'll build the level on Unity, which could take more or less time than the mockup, depending on the size of the level you are expecting.
On average, I'd be able to deliver this project in 6-7 days, depending on the size it could be more days. Please contact me if interested.