I have been doing Windows systems programming since 2008 on various Windows device platform teams. I've written OS code from the Kenrel, to session 0 user mode services, to public Win32/WinRT APIs. I am familiar with the Windows kernel, PnP, driver frameworks, device protocol stacks, writing services, security, COM, RPC4, WRL, WinRT, etc.
Before that, I used to work for AFRL doing HPC programming implementing parallel finite element and montecarlo EM solvers in C and Fortran with MPI, etc. I also did GP-GPU research and programming.