Against the backdrop of China’s economic restructuring and intensifying workplace competition, employee job satisfaction has declined significantly. To explore culturally specific dimensions of psychological capital (PsyCap) such as "relational resilience" and "collective hope," and further explain the dilemma of "high engagement but low satisfaction" in China, this study, based on the Conservation of Resources (COR) Theory and the perspective of cultural psychology, investigates the mediating role of PsyCap in the relationship between work engagement and job satisfaction, as well as the moderating effects of industry type and education level. This study adopts a mixed-methods research approach. First, a literature review was conducted to construct a theoretical model of "work engagement → PsyCap → job satisfaction," with industry type and education level set as moderating variables. Subsequently, a stratified sampling survey was carried out in the core economic regions of eastern China. Electronic questionnaires were distributed to employees in the manufacturing industry and high-tech industry (samples from the two industries each accounted for 50%, consistent with the national industrial structure). After screening out invalid questionnaires, 428 valid questionnaires were finally obtained, with an effective recovery rate of 91.1%. The sample was representative in terms of demographic characteristics: the 26-35 age group (the main labor force) accounted for 58%, females accounted for 52.1%, and education levels ranged from junior high school and below to master’s degree and above. The research measurement tools included: (1) Work Engagement Scale, which consists of two dimensions: autonomous engagement and obligatory engagement; (2) Psychological Capital Scale, focusing on two dimensions: "hope for organizational support" and "resilience rooted in family responsibility"; (3) Job Satisfaction Scale, which includes two dimensions: intrinsic satisfaction and extrinsic satisfaction. Data were analyzed using Confirmatory Factor Analysis (CFA), Structural Equation Modeling (SEM), and the Bootstrap method (5,000 resamplings). The main research results are as follows: (1) Full mediating effect of PsyCap: Work engagement had a significant positive predictive effect on PsyCap (β=0.61, p<0.001), among which both obligatory engagement (β=0.45, p<0.001) and autonomous engagement (β=0.39, p=0.003) were significant; PsyCap had a significant positive predictive effect on job satisfaction (β=0.70, p<0.001), and the contribution of the "hope" dimension (β=0.51, p<0.001) was higher than that of the "resilience" dimension (β=0.38, p=0.005). The direct effect of work engagement on job satisfaction was not significant (β=0.09, p=0.215), and the mediating effect of PsyCap accounted for 82.7% of the total effect. (2) Moderating effects: Industry type moderated the path of "work engagement → PsyCap"; education level moderated the path of "PsyCap → job satisfaction." The interaction between the two revealed a "dual-track mechanism": employees with low education in the manufacturing industry followed the path of "obligatory engagement → resilience → satisfaction" (β=0.36, p<0.001), while employees with high education in the high-tech industry followed the path of "autonomous engagement → hope → satisfaction" (β=0.49, p<0.001). Confirmatory Factor Analysis showed that the model had a good fit (χ²/df=2.15, CFI=0.96, RMSEA=0.052), and the Average Variance Extracted (AVE) of all constructs was greater than 0.5, while the Composite Reliability (CR) was higher than 0.8. Theoretically, this study deepens the cultural adaptability of PsyCap and expands the connotation of the COR Theory by emphasizing social resources such as family well-being. Practically, the study provides differentiated strategies: manufacturing enterprises can enhance employees’ resilience through family support measures such as children’s education subsidies; high-tech enterprises can strengthen employees’ sense of hope by improving the transparency of promotion. This study has limitations, including its cross-sectional design and samples concentrated in eastern China. Future research can adopt a longitudinal design and expand the samples to central and western China.