Long is the CEO and Co-founder of DanteHQ. Previously, he worked as a machine learning engineer at Bytedance and Quora and as an equity associate at AllianceBernstein. Long is also the co-founder and advisor of Pencil Philosophy, a liberal arts education non-profit program in Vietnam. He earned a Master's degree from Stanford and a Bachelor's degree from Columbia with Phi Beta Kappa and summa cum laude.