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This perspective presents a novel physics approach in the field of electromagnetic and electronics engineering, combining the principle of metamaterials that may exist naturally in semiconductor electronic devices with parametric design and geometric optimization. By manipulating the geometric parameters of a simple transistor, diode, or resistor at the subwavelength scale, unexpected quantum localized oscillations can be achieved for their charge carriers (i.e., electrons), which can be triggered by inputting electromagnetic or electronic signals at specific frequencies that match their natural resonance frequencies. The proper and precise control of these tunable subwavelength physical phenomena will lead to an emerging electronics discipline focusing on creating engineered electronics and integrated circuits with unprecedented functionalities beyond the limits of traditional electronics and integrated circuits. The applications of parametric geometric meta-electronics span a wide range of active tunable detectors and emitters in any frequency band. This meta-electronic physical approach enables an alternative room-temperature solution to the fundamental extreme cooling requirements for superconductors and quantum computers.