Devs "floating room" have a pattern of Sierpinski carpet on the walls, a type of plane fractal.
Amaya is also referenced in Annihilation, also by Alex Garland. The fort previously occupied by the soldiers and discovered by the women is named Fort Amaya.
Devs room is shaped as a level-3 Menger sponge, a three-dimensional generalization of the one-dimensional Cantor set and two-dimensional Sierpinski carpet fractal.
The character Lyndon is a young boy. However, the casting department casted a biological female Cailee Spaeny to act like a young boy.
The bar scene in episode one was actually filmed in London, at Hoxton Bar & Kitchen (on Hoxton Square) - even though the exterior shot was of a San Francisco street.