I have a PhD in physics, specializing in few-body problems in ultracold quantum gases. I attacked these problems using various hyperspherical coordinates systems.
For programming outside of Mathematica, I used C in grad school and (modern) Fortran in my post doc. I wrote code such as a Monte Carlo algorithm and stochastic choosing of basis functions. I utilized both MPI and OpenMP approaches to speed up my code on PBS and SLURM managed clusters.
Now I work for Wolfram Research as a Technology Engineer, teaching people hwo to use Mathematica. I've always enjoyed teaching, and I find this is a nice extension of that pursuit in an area that I'm growing more familiar with day-by-day.