Gaëtan Fichet de Clairfontaine

I trained as an astrophysicist and spent several years modelling relativistic jets, fitting models to multi-wavelength data, and running large simulations on European HPC clusters. That work meant building my own tools, being careful about where errors came from, and making sure results could be reproduced.

Those habits carry over to data and software work: build something, check it against reality, and be clear about what it does and doesn't show.