This article examines the institutional design of a public administration model in the context of geopolitical turbulence. The concept of a social sovereign economy underpins the substantiation of the principles and architecture of a governance system that ensures the sustainability and adaptability of national development. The article demonstrates that strategic policy priorities are shaped by social goals and national sovereignty. It highlights key characteristics of the long-term development vector: limited strategic openness of the economy, technological sovereignty as its foundation, an active role for the state, self-sufficiency and sustainability, integration of the economic and social dimensions, and a political and legal framework for public administration. A three-loop model is proposed: a multi-level governance architecture for a social sovereign economy, in which the external environment serves as an imperative of sovereignty and sets institutional constraints, while the internal loops are aimed at prioritizing domestic development and security. The paper presents mechanisms for institutional design: setting rules and incentives, and coordinating strategic planning tools for industrial, scientific, technological, and social policies. The authors argue that external environmental turbulence is a catalyst for the transition from a model of integration into the global economy to a model of social sovereignty to ensure national resilience, security, and autonomy.