We design buildings in milliseconds. Desktop software written in plain old C. See it in action here: https://blog.testfit.io/.
If you like managing your own memory, optimizing algorithms to run in under a millisecond, and solving tough spatial problems using 2D vectors and trigonometry, then we might be the company for you. Being prone to ranting about how much RAM Slack uses is also a good sign.
The full job description and application link can be found here: https://blog.testfit.io/engineerprogrammer