Joonho completed his Ph.D. work in chemistry at the University of California, Berkeley, under the guidance of Prof. Martin Head-Gordon. His main contributions include the development of regularized perturbation theory, coupled-cluster valence bond theory for strong correlation, and an efficient quantum circuit ansatz for chemistry. Joonho's dissertation, titled Postmodern Electronic Structure Theory, was recognized by the 2020 Justin Jankunas Doctoral Dissertation Award in American Physical Society. Since his graduation in 2019, Joonho has been a postdoc in the Reichman group at Columbia University developing expertise in materials, quantum dynamics, and vibronic problems. Joonho is also a visiting faculty researcher at Google Quantum AI, where he develops and applies quantum algorithms for electronic structure problems.