This paper presents an integrated approach to foundations for modular prefabricated buildings, focusing on the development of a novel ground implant system and its integration with an automated pile pressing machine. By combining water jetting technology with a pile pressing method, the system leverages lightweight equipment and modularly designed implants and concrete piles to reduce insertion forces. Full-scale experiments demonstrated that water jetting can decrease soil resistance by up to 70%, enabling a reduction in equipment weight from 200 tons to 75 tons. This reduction facilitates automated longitudinal and transverse movement of the piling machine, a critical advancement for flexible deployment in complex environments. Model-scale experiments further confirmed that regulated jetting mitigates the ‘stick-slip’ effect and reduces water consumption by 40%, ensuring controlled and energy-efficient implant installation. The implant features a threaded, conical design with integrated water channels, facilitating efficient insertion into dense and saturated soils. Full-scale field studies confirmed that water jet-assisted installation significantly reduces insertion force and time while maintaining high axial load-bearing capacity. This research directly contributes to the advancement of the Aggregate-Modular Piling System, tailored for reconstruction efforts in Ukraine and modular housing programs in Central and Eastern Europe.