Small satellite missions are won or lost in the trade space: propulsion, power, orbit and schedule all move at once. IENAI SPACE closes that loop. We build ATHENA electric propulsion for smallsats and IENAI 360, a cloud mission analysis platform that propagates flight and attitude dynamics at high fidelity and runs multidisciplinary design optimization over the full spacecraft. Available as a browser-based studio or a Python library. Used by research institutes, defense academies and operators in the Industry.