[loxias]

I'm interested in the same stuff/area. There's a lot of great results to read, check out cache-oblivious B-trees by Dr. Demaine (or honestly anything by him.) This link is a good distillation of some of the concepts. https://algorithmica.org/en/eytzinger

I'm _also_ interested in scientific software, but that's more a hobby than a job. =)

For propagating a large number of orbits in space, I'm really curious what the Correct (tm) numerical algorithm is, mind sharing more? I love that space right at the intersection of lots of math + need to understand how computers really work. Once upon a time I implemented fast multipole method for the n-body problem, but I certainly don't claim to deeply understand it, anymore. :)