About Thomas Knudsen...
On Github you may know me as busstoptaktik. IRL I'm a senior advisor and geodesist at SDFI, the Danish NMA.
I have a background in geodetic research, doing PhD- and postdoctoral work, partially at the Niels Bohr Institute at the University of Copenhagen, partially at what has in the meantime morphed into being the Geodetic Department of the Danish National Space Institute.
I'm a contributor to, and steering committee member of the PROJ transformation system project.
For more experimental purposes, I develop Rust Geodesy - a minimalistic (5000 LOC) transformation system, mostly for experimental causes (also see the project pages on lib.rs and on crates.io)