I work at the interface of Astrophysics and Astroparticle Physics, and of theory and observation. My research focuses on the extreme physics occurring around compact objects like black holes, and the role black holes of all scales play in the Universe. I am a founding member of the Event Horizon Telescope (EHT) Collaboration, and was part of the team that presented the first image of the black hole M87* to the world in 2019. I served on the EHT Science Council from 2016-2022 (Vice Chair from 2019), and am currently serving on its Science Board. From 2016-2024 I co-coordinated the EHT Multi-Wavelength Science Working Group (WG). My group contributes modeling and analysis for the Theory and Simulations WG. I am also a member of the Cherenkov Telescope Array Observatory (CTAO) project, where I coordinated the Multi-Wavelength/Multi-Messenger Science WG for several years. I am currently funded by an ERC Synergy Grant “BlackHolistic”, aiming to better understand black holes of all scales. A central goal is to build a new 14m mm-radio dish in Namibia, the Africa Millimetre Telescope (AMT), in partnership with Radboud University, University of Oxford, University of Namibia, University of South Africa and University of Turku.