Maintained and enhanced system functionalities, supporting all stages of the product lifecycle, including development, planning, shipment tracking and reporting. Optimized MySQL queries and implemented input sanitization techniques to prevent SQL injection, improving system performance and ensuring data integrity. Refactored business logic into reusable Perl modules, enhancing maintainability, scalability and code reusability. Integrated REST APIs using curl for seamless data exchange with external systems. Developed dynamic web interfaces using CGI, improving user experience and system interaction.