Dr. Rashkovetskyi started as a CCAPP Postdoctoral Fellow on July 28, 2025. He is currently working on the splitting of the Dark Energy Spectroscopic Instrument (DESI) galaxies based on a thermal Sunyaev-Zeldovich map to extract more information from galaxy clustering. He defended his PhD in May 2025 at Center for Astrophysics | Harvard & Smithsonian with Prof. Daniel Eisenstein. He has developed the covariance matrix pipeline for 2-point correlation functions for DESI 2024 (DR1) and DR2 baryon acoustic oscillations measurements. Earlier, he conducted a follow-up study of small-scale baryon inhomogeneities at recombination time as a possible relief of the Hubble tension.