Introduction: 
Every business organization must develop a range of strategies and policies to cope with uncertainty and environmental changes. In this regard, strategic flexibility and strategic innovation are essential for enabling adaptation to these dynamic conditions. Organizations strive to develop strategies and mobilize resources that support innovation, ensure sustainable competitiveness, and foster long-term revenue and profit growth. To build strategic flexibility, entrepreneurs must demonstrate strategic leadership, enhance dynamic capabilities, invest in and develop human resources, adopt modern manufacturing and information technologies, and cultivate an innovative organizational culture. Accordingly, the aim of this study is to investigate the impact of strategic flexibility and strategic innovation on employee performance, with job satisfaction serving as a mediating variable.
Methodology:
This research is applied in nature (in terms of purpose) and descriptive-survey-correlational (in terms of data collection methodology). To gather information on the theoretical background and literature, library resources and scientific databases were used. For primary data collection, a field method was employed through the distribution of structured questionnaires.The statistical population of this study comprises the managers and supervisors of small and medium-sized enterprises (SMEs) located in the Toos Industrial Park of Mashhad, totaling 26,308 individuals. Based on Cochran's formula, the required sample size was estimated at 379 respondents. The sampling method used was simple random sampling from the available population. The data collection instrument was a standardized questionnaire consisting of 24 items, adopted from the works of Dwikat et al. (2023), Naml et al. (2024), Esrikantraja and Sentiraja (2013), and Al-Qurashi et al. (2021). To ensure construct validity, factor analysis, convergent validity, and discriminant (divergent) validity were conducted. Cronbach's alpha and composite reliability coefficients were used to assess the reliability of the constructs. At the end of the chapter, the results of the measurement model quality indicators and the coefficient of determination (R²) values are presented, indicating the overall suitability and robustness of the measurement model. The total Cronbach’s alpha coefficient was estimated at 0.909, confirming the acceptable reliability of the instrument. Descriptive statistics related to demographic variables were analyzed using SPSS version 27. Data analysis for hypothesis testing and model fit, was done by structural equation modeling method and SmartPLS4 software.
Results and Discussion:
7 hypotheses have been explained in the present research and the data collected from all employees of small and medium-sized companies in the Toos Industrial Park of Mashhad. been used to analyze them. The results showed that the strategic flexibility and strategic innovation have a significant impact on job satisfaction thet The t-statistics and path coefficients in these relationships are respectively, (t=4.762, β= 0.355), (t= 5.17, β= 0.309), and strategic flexibility and strategic innovation have a significant impact on employee performance (t= 3.571, β= 0.192), (t=3.754, β= 0.202) . Additionally, the direct impact of job satisfaction on employee performance was also significant and t value- 13.508 & β= 0.508. Finally, the findings indicated that strategic flexibility and strategic innovation significantly affect employee performance through the mediating role of job satisfaction The t-statistics and path coefficients in these relationships are respectively (t= 4.443, β= 0.181), (t= 4.593, β= 0.157).
  Conclusion:
 Organizations can incorporate strategies aimed at enhancing strategic flexibility and job satisfaction into their human resource practices—such as offering skill development opportunities and fostering a supportive work environment. Recognizing the mediating role of job satisfaction enables organizations to design targeted initiatives that elevate employee satisfaction, thereby promoting greater engagement and productivity. Given that innovation significantly influences job satisfaction and employee performance—especially in small and medium-sized enterprises (SMEs)—management should actively promote a culture of innovation and encourage the generation and implementation of creative ideas by employees to optimize business processes and generate added value.In light of the pivotal role of job satisfaction as a mediator, it is essential for management to prioritize the development of an inclusive work environment, ensure equitable compensation systems, and maintain transparent and open communication channels to strengthen employee morale and satisfaction.The findings of this study offer valuable insights for both operational managers and researchers, contributing to more effective organizational management practices. By uncovering the intricate relationships between strategic flexibility, strategic innovation, job satisfaction, and employee performance, this research enhances the theoretical understanding of these constructs and encourages further empirical exploration in the fields of organizational behavior and strategic management.