The systems, methods, and devices disclosed herein relate to sandwiched multi-layer structures for cooling electronics. In some embodiments, a computing assembly can include a first cooling system, a first electronics layer, a second cooling system, and a second electronics layer. The first cooling system can be disposed on top of and can be in thermal communication with the first electronics layer, the first electronics layer can be disposed on top of and can be in thermal communication with the second cooling system, and the second cooling system can be disposed on top of and can be in thermal communication with the second electronics layer. In some embodiments, at least one layer can use system on wafer packaging.