The actual practice of constructing megastructures and manipulating
celestial bodies. It's the applied version of Kardashevian Mechanics, involving timelines of millennia, workforces of self-replicating machines, and a
tolerance for risk that includes "if we fail, we might accidentally cause a supernova." This engineering discipline deals with project management where the worksite is
light-years across and the building materials are asteroids, comets, and starlight.
Example: The coordinated effort to disassemble
Mercury to provide raw materials for a
Dyson Swarm is an act of Kardashevian Engineering. It requires planning on geological timescales, autonomous robotic swarms, and solutions for
heat dissipation that would vaporize any known terrestrial material.