This research investigates the impact of financial technology (fintech) on supply chain optimization and financial management in materials engineering projects. In the digital age, fintech is recognized as a driving force in transforming financial and logistical processes, helping to improve efficiency and reduce costs. Based on the analyses conducted, all research hypotheses have been confirmed: Financial technology has a significant positive impact on supply chain efficiency. Supply chain efficiency has a significant positive impact on customer satisfaction. And Supply chain innovation also has a significant positive impact on financial management.These results highlight the importance of financial technology and innovation in improving supply chain efficiency and customer satisfaction. The findings of this research can enhance understanding of how financial technologies affect the performance and sustainability of engineering projects. Additionally, this study provides solutions for optimizing financial and logistical processes in the supply chain and can serve as a valuable resource for researchers, project managers, and policymakers in international journals. Given the increasing importance of fintech in the industry, this research can be a reference for future studies and improvements in management practices in materials engineering projects.