Her dissertation, Atmospheric neutrino flux and search for astrophysical neutrinos: Measurement with MACRO at Gran Sasso, was jointly supervised by C. De Marzo, Francesco Ronga, and Giuseppe Battistoni.
[3] Montaruli's earliest research was part of the MACRO experiment at the Laboratori Nazionali del Gran Sasso.
She has also worked with the ANTARES neutrino detector in the Mediterranean Sea near Toulon, France, the VERITAS gamma-ray telescope array in Arizona, and the High Altitude Water Cherenkov Experiment on Sierra Negra in Mexico.
[4] In 2001, Montaruli won the Shakti P. Duggal Award of the Commission on Cosmic Rays of the International Union of Pure and Applied Physics, for "significant contributions to cosmic-ray physics by a young scientist of outstanding ability".
[5] In 2009 she was named a Fellow of the American Physical Society (APS), after a nomination from the APS Division of Astrophysics, "for fundamental contributions, both experimental and theoretical, to the understanding of cosmic and atmospheric neutrino fluxes, neutrino mass, and the spectra of dark matter annihilations".