In the present era, public organizations are facing serious challenges in managing skilled personnel to maintain competitive advantage and meet the requirements of sustainable development, and the lack of an integrated framework for integrating intelligence, innovation, and sustainability is felt. The main goal of this research was to present a paradigmatic model of intelligent management of expert human capital with a sustainability approach in public organizations. In terms of paradigm, this research was conducted in an interpretive framework, with a qualitative approach and a data-based method (Strauss and Corbin). The statistical population included Shiraz municipality managers and expert professors in the field of human resources, which were obtained using purposive sampling and snowball technique after conducting 13 saturation interviews. Data were collected through semi-structured interviews. The validity and reliability of the research were conducted using Lincoln and Guba evaluation criteria. Data analysis was performed using MAXQDA2022 software in three stages of open, axial, and selective coding. The findings led to the identification of a paradigmatic model that shows that causal factors including synergy, prudential adequacy, innovative smartization methods, and sustainable development approaches, in the context of human, structural, and systemic conditions and under the influence of technological, managerial, and economic factors, provide the basis for formulating an innovative smart strategy for managing skilled personnel in sustainable development. This strategy is implemented through financial-managerial, organizational, and technical-developmental strategies and ultimately leads to positive outcomes at the personnel, managerial, organizational, and social levels. This logical connection between different dimensions constitutes the theoretical explanation of the research model. Therefore, smart management of skilled personnel is a multifaceted phenomenon in which the balance between all categories can be the key to success and the realization of positive outcomes at the individual and organizational levels.