Encapsulated heterostructures of exfoliated van der Waals superconductors offer us a platform to observe 2D superconductivity in the clean limit. Low carrier density superconductors are of even more interest since their electronic properties can be tuned with an electric field or electrostatic doping. In this talk, we present our results on T_d-MoTe₂. We show that bilayer T_d-MoTe₂ is a superconductor with a T_c of ~ 2.5 K which can be tuned by electrostatic doping. Together with magnetotransport experiments and analysis, we conclude that superconductivity here requires the presence of both carrier types, electrons and holes. Doping into a region of one dominant carrier turns the material normal leading to a dome-shaped superconducting phase diagram as a function of electrostatic doping and temperature. We discuss possible interband pairing mechanisms that can give rise to such behavior.