We do heavy duty graphics/CUDA, feel free to ping contact@dyndrite.com. We are currently looking.

Most big tech companies, AR/VR startups, game companies have graphics programmer roles that might do similar things.

Teams that specifically have the need for voxel-ish rendering include Minecraft (Microsoft), Roblox, Medium (Oculus), Media Molecule (Sony).

Outside of games, art tools and consumer apps, voxels are used in many medical and scientific applications.

We're not hiring right now, but in the future we may have similar needs. We're all webgl, check out https://ayvri.com and drop me a line at pete[at]ayvri.com

We have some solid game dev tech on the team already.