Abstract
Effective adaptation of managerial personnel in the public service system is a key factor in improving the professional effectiveness and sustainability of public institutions. The relevance of the study is determined by the need to improve onboarding mechanisms in Kazakhstan to reduce the risks of professional maladaptation of managers and increase managerial potential. The methodological base of the research includes a systematic and comparative analysis, as well as a content analysis of regulatory documents, adaptation programs, and methodological materials from foreign government institutions. The analysis covers organizational models, mentoring programs, digital support tools, performance evaluation mechanisms, and the integration of new managers into the corporate culture of government agencies. The analysis revealed the key factors of successful adaptation: consistency, mentoring, digital support, individualization and strategic integration. Modern trends in the adaptation of managerial personnel have also been identified: digitalization of processes, personalized approach, mentoring and peer-learning, efficiency assessment through KPIs, integration of adaptation into the human resources development strategy. Based on the conducted research, a conceptual management model for the adaptation of managerial personnel in Kazakhstan is proposed, taking into account the institutional and cultural characteristics of the national public service system. The scientific novelty of the work is to substantiate the possibility of applying an integrated approach of international experience to the adaptation of managerial personnel in Kazakhstan and to formulate management recommendations to improve the effectiveness and sustainability of the managerial potential of government agencies.