Evitalizing Fintech: Leveraging Refactoring Techniques to Enhance Legacy System Performance and Maintainability

Document Type : Original research paper

Author

Department of Software Engineering, Faculty of Computer science, Modern sciences and arts University, Cairo, Egypt

Abstract

This paper explores the critical role of refactoring in modernizing legacy fintech systems, which often become obstacles to innovation and operational efficiency as they age. Legacy systems, while historically reliable, can accumulate technical debt, suffer from performance issues, and struggle with scalability in the face of evolving technology demands. The paper highlights how refactoring techniques such as modularization, dependency management, and performance optimization can transform outdated architectures. By breaking monolithic systems into modular components, modularization enables more manageable and flexible structures that support parallel development and easier system updates. Dependency management reduces the tight coupling between components, increasing flexibility and adaptability, while performance optimization addresses inefficiencies to improve transaction processing and overall system performance. Through an in-depth case study, the paper demonstrates the tangible benefits of refactoring, showcasing how these techniques can reduce technical debt, improve maintainability, and increase system scalability. Refactoring not only aligns legacy systems with modern fintech requirements but also facilitates integration with emerging technologies such as aAI, blockchain, and real-time processing. The paper concludes by emphasizing the need for automating refactoring processes to further streamline modernization efforts and proposes directions for future research, including the development of automated tools to assist in refactoring legacy fintech systems for greater efficiency and sustainability.

Keywords

Journal of Engineering Advances and Technologies for Sustainable Applications
Volume 1, Issue 3 - Serial Number 3
Special Issue, Selected papers from The International Conference on Engineering, Technology, and Sciences (ICETS 2025)
July 2025
Pages 68-76

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