i have plenty of experience with c++, python (occasionally with types), linux, postgres, implementing web servers, implementing browser frontends, low-level performance optimization, implementing distributed systems, implementing academic papers, and customer interaction; i've dabbled in typescript, react, and haskell, and last week i was pair-programming with a friend who was kind of porting a raytracer i wrote to cuda. another friend of mine spent the summer doing research on the ceph team, and another one runs nix and ceph at home and has been experimenting with rolling nix out across his company's fleet. i've tried guix myself but not nix

so i don't think this is such a crazy list; their stack is nearly all like super mainstream technology, except haskell, and haskell is hardly some unknown language